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• Unable to start Android emulator > 1.5

  - by Cicatrice

  Hi ! I got this trace when I tried to launch android 1.6 or 2.1. Android 1.5 is working fine. I tried to reinstall each SDK, but there is no way to get it working. I created those AVD with Eclipse plugin. geo@geo-laptop:~> android/android-sdk-linux_86/tools/emulator -avd a16 *** glibc detected *** android/android-sdk-linux_86/tools/emulator: free(): invalid pointer: 0x45454545 *** ======= Backtrace: ========= /lib/libc.so.6(+0x6df7b)[0xb748cf7b] /lib/libc.so.6(cfree+0xd9)[0xb7491ac9] android/android-sdk-linux_86/tools/emulator[0x80db20c] android/android-sdk-linux_86/tools/emulator[0x840eb38] ======= Memory map: ======== 08048000-08246000 r-xp 00000000 08:06 5693701 /home/geo/android/android-sdk-linux_86/tools/emulator 08246000-08249000 rw-p 001fd000 08:06 5693701 /home/geo/android/android-sdk-linux_86/tools/emulator 08249000-08445000 rw-p 00000000 00:00 0 08445000-08447000 rwxp 00000000 00:00 0 08447000-0874c000 rw-p 00000000 00:00 0 [heap] ad8e9000-ada86000 rw-s 00000000 00:04 85229580 /SYSV00000000 (deleted) ada86000-adced000 rw-p 00000000 00:00 0 adced000-add0d000 rw-s 00000000 00:04 84770825 /SYSV0056a4d6 (deleted) add0d000-adde4000 r-xp 00000000 08:05 22591 /usr/lib/libasound.so.2.0.0 adde4000-adde5000 ---p 000d7000 08:05 22591 /usr/lib/libasound.so.2.0.0 adde5000-adde8000 r--p 000d7000 08:05 22591 /usr/lib/libasound.so.2.0.0 adde8000-adde9000 rw-p 000da000 08:05 22591 /usr/lib/libasound.so.2.0.0 adde9000-ade09000 rw-s 00000000 00:05 3268 /dev/snd/pcmC0D0p ade09000-b3e0b000 rw-p 00000000 00:00 0 b3e0b000-b3e0c000 ---p 00000000 00:00 0 b3e0c000-b55cd000 rw-p 00000000 00:00 0 b55cd000-b6dcd000 rwxp 00000000 00:00 0 b6dcd000-b6ea3000 rw-p 00000000 00:00 0 b6ea4000-b7205000 rw-p 00000000 00:00 0 b7205000-b7209000 r-xp 00000000 08:05 22491 /usr/lib/libXfixes.so.3.1.0 b7209000-b720a000 r--p 00003000 08:05 22491 /usr/lib/libXfixes.so.3.1.0 b720a000-b720b000 rw-p 00004000 08:05 22491 /usr/lib/libXfixes.so.3.1.0 b7212000-b7222000 rw-s 00000000 00:05 3269 /dev/snd/pcmC0D0c b7222000-b7226000 r-xp 00000000 08:05 22588 /usr/lib/alsa-lib/libasound_module_rate_speexrate.so b7226000-b7227000 r--p 00003000 08:05 22588 /usr/lib/alsa-lib/libasound_module_rate_speexrate.so b7227000-b7228000 rw-p 00004000 08:05 22588 /usr/lib/alsa-lib/libasound_module_rate_speexrate.so b7228000-b7229000 rw-s 81000000 00:05 3268 /dev/snd/pcmC0D0p b7229000-b722a000 r--s 80000000 00:05 3268 /dev/snd/pcmC0D0p b722a000-b722b000 rw-s 00000000 00:04 84738056 /SYSV0056a4d5 (deleted) b722b000-b7276000 r--p 00000000 08:05 85242 /var/cache/libx11/compose/l4_024_313cb605_00280cc0 b7276000-b72b5000 r--p 00000000 08:05 20724 /usr/lib/locale/en_US.utf8/LC_CTYPE b72b5000-b73d2000 r--p 00000000 08:05 101088 /usr/lib/locale/en_US.utf8/LC_COLLATE b73d2000-b73d9000 r-xp 00000000 08:05 22991 /usr/lib/libXrandr.so.2.2.0 b73d9000-b73da000 r--p 00006000 08:05 22991 /usr/lib/libXrandr.so.2.2.0 b73da000-b73db000 rw-p 00007000 08:05 22991 /usr/lib/libXrandr.so.2.2.0 b73db000-b73e4000 r-xp 00000000 08:05 4146 /usr/lib/libXrender.so.1.3.0 b73e4000-b73e5000 r--p 00008000 08:05 4146 /usr/lib/libXrender.so.1.3.0 b73e5000-b73e6000 rw-p 00009000 08:05 4146 /usr/lib/libXrender.so.1.3.0 b73e6000-b73f7000 r-xp 00000000 08:05 3705 /usr/lib/libXext.so.6.4.0 b73f7000-b73f8000 r--p 00010000 08:05 3705 /usr/lib/libXext.so.6.4.0 b73f8000-b73f9000 rw-p 00011000 08:05 3705 /usr/lib/libXext.so.6.4.0 b73f9000-b73fa000 rw-p 00000000 00:00 0 b73fa000-b73fc000 r-xp 00000000 08:05 8573 /usr/lib/libXau.so.6.0.0 b73fc000-b73fd000 r--p 00001000 08:05 8573 /usr/lib/libXau.so.6.0.0 b73fd000-b73fe000 rw-p 00002000 08:05 8573 /usr/lib/libXau.so.6.0.0 b73fe000-b73ff000 rw-p 00000000 00:00 0 b73ff000-b741d000 r-xp 00000000 08:05 3862 /usr/lib/libxcb.so.1.1.0 b741d000-b741e000 r--p 0001d000 08:05 3862 /usr/lib/libxcb.so.1.1.0 b741e000-b741f000 rw-p 0001e000 08:05 3862 /usr/lib/libxcb.so.1.1.0 b741f000-b7583000 r-xp 00000000 08:05 39690 /lib/libc-2.11.1.so b7583000-b7584000 ---p 00164000 08:05 39690 /lib/libc-2.11.1.so b7584000-b7586000 r--p 00164000 08:05 39690 /lib/libc-2.11.1.so b7586000-b7587000 rw-p 00166000 08:05 39690 /lib/libc-2.11.1.so b7587000-b758a000 rw-p 00000000 00:00 0 b758a000-b75a6000 r-xp 00000000 08:05 11519 /lib/libgcc_s.so.1 b75a6000-b75a7000 r--p 0001b000 08:05 11519 /lib/libgcc_s.so.1 b75a7000-b75a8000 rw-p 0001c000 08:05 11519 /lib/libgcc_s.so.1 b75a8000-b768b000 r-xp 00000000 08:05 85419 /usr/lib/libstdc++.so.6.0.14 b768b000-b768c000 ---p 000e3000 08:05 85419 /usr/lib/libstdc++.so.6.0.14 b768c000-b7690000 r--p 000e3000 08:05 85419 /usr/lib/libstdc++.so.6.0.14 b7690000-b7691000 rw-p 000e7000 08:05 85419 /usr/lib/libstdc++.so.6.0.14 b7691000-b7698000 rw-p 00000000 00:00 0 b7698000-b76c0000 r-xp 00000000 08:05 39698 /lib/libm-2.11.1.so b76c0000-b76c1000 r--p 00027000 08:05 39698 /lib/libm-2.11.1.so b76c1000-b76c2000 rw-p 00028000 08:05 39698 /lib/libm-2.11.1.so b76c2000-b76d9000 r-xp 00000000 08:05 39716 /lib/libpthread-2.11.1.so b76d9000-b76da000 r--p 00016000 08:05 39716 /lib/libpthread-2.11.1.so b76da000-b76db000 rw-p 00017000 08:05 39716 /lib/libpthread-2.11.1.so b76db000-b76de000 rw-p 00000000 00:00 0 b76de000-b76e1000 r-xp 00000000 08:05 39696 /lib/libdl-2.11.1.so b76e1000-b76e2000 r--p 00002000 08:05 39696 /lib/libdl-2.11.1.so b76e2000-b76e3000 rw-p 00003000 08:05 39696 /lib/libdl-2.11.1.so b76e3000-b76eb000 r-xp 00000000 08:05 39720 /lib/librt-2.11.1.so b76eb000-b76ec000 r--p 00007000 08:05 39720 /lib/librt-2.11.1.so b76ec000-b76ed000 rw-p 00008000 08:05 39720 /lib/librt-2.11.1.so b76ed000-b76ef000 r-xp 00000000 08:05 39725 /lib/libutil-2.11.1.so b76ef000-b76f0000 r--p 00001000 08:05 39725 /lib/libutil-2.11.1.so b76f0000-b76f1000 rw-p 00002000 08:05 39725 /lib/libutil-2.11.1.so b76f1000-b7828000 r-xp 00000000 08:05 4550 /usr/lib/libX11.so.6.3.0 b7828000-b7829000 r--p 00136000 08:05 4550 /usr/lib/libX11.so.6.3.0 b7829000-b782c000 rw-p 00137000 08:05 4550 /usr/lib/libX11.so.6.3.0 b782c000-b782d000 rw-s 81000000 00:05 3269 /dev/snd/pcmC0D0c b782d000-b782e000 r--s 80000000 00:05 3269 /dev/snd/pcmC0D0c b782e000-b782f000 rw-s 00000000 00:04 82771979 /SYSV0056a4d7 (deleted) b782f000-b7839000 r-xp 00000000 08:05 22208 /usr/lib/libXcursor.so.1.0.2 b7839000-b783a000 r--p 00009000 08:05 22208 /usr/lib/libXcursor.so.1.0.2 b783a000-b783b000 rw-p 0000a000 08:05 22208 /usr/lib/libXcursor.so.1.0.2 b783b000-b783c000 r--p 00000000 08:05 20194 /usr/lib/locale/en_US.utf8/LC_NUMERIC b783c000-b783d000 r--p 00000000 08:05 100190 /usr/lib/locale/en_US.utf8/LC_TIME b783d000-b783e000 r--p 00000000 08:05 100189 /usr/lib/locale/en_US.utf8/LC_MONETARY[1] 24082 abort android/android-sdk-linux_86/tools/emulator -avd a16

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• Android Game Development problem with Speed = Distance / Time

  - by Charlton Santana

  I have been coding speed for an object. I have made it so the object will move from one end of the screen to another at a speed depending on the screen size, at the monemt I have made it so it will take one second to pass the screen. So i have worked out the speed in code but when I go to assign the speed it tells me to force close and i do not understand why. Here is the code: MainGame Code: @Override protected void onDraw(Canvas canvas) { setBlockSpeed(getWidth()); } private int blockSpeed; private void setBlockSpeed(int screenWidth){ Log.d(TAG, "screenWidth " + screenWidth); blockSpeed = screenWidth / 100; // 100 is the FPS.. i want it to take 1 second to pass the screen Math.round(blockSpeed); // to make it a whole number block.speed = blockSpeed; // this is line 318!! if i put eg block.speed = 8; it still tells me to force close } Block.java Code: public int speed; public void draw(Canvas canvas) { canvas.drawBitmap(bitmap, x - (bitmap.getWidth() / 2), y - (bitmap.getHeight() / 2), null); if(dontmove == 0){ this.x -= speed; // if it was eg this.x -= 18; it would not have an error } } The exception 06-08 13:22:34.315: E/AndroidRuntime(2801): FATAL EXCEPTION: Thread-11 06-08 13:22:34.315: E/AndroidRuntime(2801): java.lang.NullPointerException 06-08 13:22:34.315: E/AndroidRuntime(2801): at com.charltonsantana.game.MainGame.setBlockSpeed(MainGame.java:318) 06-08 13:22:34.315: E/AndroidRuntime(2801): at com.charltonsantana.game.MainGame.onDraw(MainGame.java:351) 06-08 13:22:34.315: E/AndroidRuntime(2801): at com.charltonsantana.game.MainThread.run(MainThread.java:64)

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• Android EditText within a ListView

  - by metalideath

  I have created a custom Array Adapter to bind a custom row that contains some static text and an editable EditText. I am trying to register to be notified when the user changes the text within the edit text and when notified to determine which ArrayList row the modified EditText corresponds to. In the past with other types of views such as a Spinner I could simply put a reference to the parent view and the row number into the tag for the Spinner view. And then when I was notified that the value changed I read the tag to determine how to correlate it back to the master ArrayList. The problem with registering to be notifed with an EditText change is that you do not get back a view but instead get a TextWatcher and I have no way to correlate back to the parent view or ArrayList row. What is the technique that you need to use in this circumstance?

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• How can i do the same thing with Gallery in Android

  - by Maxood

  I am navigating images with the clicks of next and previous buttons.Here is my code: package com.myapps.imagegallery; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class ImageGallery extends Activity { /** Called when the activity is first created. */ int imgs[] = {R.drawable.bluehills,R.drawable.lilies,R.drawable.sunset,R.drawable.winter}; String desc[] = {"Blue Hills", "Lillies", "Sunset", "Winter" }; int counter=0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final ImageView imgView = (ImageView)findViewById(R.id.ImageView01); imgView.setImageResource(imgs[counter]); final TextView tvDesc = (TextView)findViewById(R.id.tvDesc); Button btnNext = (Button)findViewById(R.id.btnNext); btnNext.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View arg0) { try{ // TODO Auto-generated method stub if (counter < desc.length -1) counter++; imgView.setImageResource(imgs[counter]); tvDesc.setText(desc[counter]); }catch(Exception e) { Toast.makeText(ImageGallery.this, e.toString(), Toast.LENGTH_SHORT).show(); } } }); Button btnPrev = (Button)findViewById(R.id.btnPre); btnPrev.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub try{ // TODO Auto-generated method stub if (counter > 0) counter--; imgView.setImageResource(imgs[counter]); tvDesc.setText(desc[counter]); }catch(Exception e) { Toast.makeText(ImageGallery.this, e.toString(), Toast.LENGTH_SHORT).show(); } }}); } } <?xml version="1.0" encoding="utf-8"?> <AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/ImageView01" android:layout_x="70dip" android:layout_width="200px" android:layout_height="200px" android:layout_y="90dip" > </ImageView> <TextView android:id="@+id/tvDesc" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" android:layout_x="90px" android:layout_y="300px" /> <Button android:layout_x="47dip" android:layout_height="wrap_content" android:text="Previous" android:layout_width="100px" android:id="@+id/btnPre" android:layout_y="341dip"> </Button> <Button android:layout_x="190dip" android:layout_height="wrap_content" android:text="Next" android:layout_width="100px" android:id="@+id/btnNext" android:layout_y="341dip"> </Button> </AbsoluteLayout>

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• Can't get ellipsis to work on Android

  - by Mark

  Hi, I have a TextView. I want it to ellipsize if longer than its available width. This does not work unless the input string has no spaces... can anyone provide an example of this working? I've tried different combinations of: singleLine="true" maxLines="1" scrollHorizontally="false" none of these have any effect. Again, if I supply a string that has no spaces in it, then the ellipsis appears correctly. What am I missing? I've tried this on 1.5, 1.6, 2.0, all same problem. Thanks

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• Android Camera intent creating two files

  - by Kyle Ramstad

  I am making a program that takes a picture and then shows it's thumbnail. When using the emulator all goes well and the discard button deletes the photo. But on a real device the camera intent saves the image at the imageUri variable and a second one that is named like if I had just opened up the camera and took a picture by itself. private static final int CAMERA_PIC_REQUEST = 1337; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.camera); //start camera values = new ContentValues(); values.put(MediaStore.Images.Media.TITLE, "New Picture"); values.put(MediaStore.Images.Media.DESCRIPTION,"From your Camera"); imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); image = (ImageView) findViewById(R.id.ImageView01); Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); startActivityForResult(intent, CAMERA_PIC_REQUEST); //save the image buttons Button save = (Button) findViewById(R.id.Button01); Button close = (Button) findViewById(R.id.Button02); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == CAMERA_PIC_REQUEST && resultCode == RESULT_OK) { try{ thumbnail = MediaStore.Images.Media.getBitmap(getContentResolver(), imageUri); image.setImageBitmap(thumbnail); } catch(Exception e){ e.printStackTrace(); } } else{ finish(); } } public void myClickHandler(View view) { switch (view.getId()) { case R.id.Button01: finish(); break; case R.id.Button02: dicard(); } } private void dicard(){ getContentResolver().delete(imageUri, null, null); finish(); }

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• Android ListView: how to select an item?

  - by mmo

  I am having trouble with a ListView I created: I want an item to get selected when I click on it. My code for this looks like: protected void onResume() { ... ListView lv = getListView(); lv.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> adapterView, View view, int pos, long id) { Log.v(TAG, "onItemSelected(..., " + pos + ",...) => selected: " + getSelectedItemPosition()); } public void onNothingSelected(AdapterView<?> adapterView) { Log.v(TAG, "onNothingSelected(...) => selected: " + getSelectedItemPosition()); } }); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> adapterView, View view, int pos, long id) { lv.setSelection(pos); Log.v(TAG, "onItemClick(..., " + pos + ",...) => selected: " + getSelectedItemPosition()); } }); ... } When I run this and click e.g. on the second item (i.e. pos=1) I get: 04-03 23:08:36.994: V/DisplayLists(663): onItemClick(..., 1,...) => selected: -1 i.e. even though the OnItemClickListener is called with the proper argument and calls a setSelection(1), there is no item selected (and hence also OnItemSelectedListener.onItemSelected(...) is never called) and getSelectedItemPosition() still yields -1 after the setSelection(1)-call. What am I missing? Michael PS.: My list does have =2 elements...

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• Android Game Development problem whith size and speed

  - by Charlton Santana

  I have been coding speed for an object. I have made it so the object will move from one end of the screen to another at a speed depending on the screen size, at the monemt I have made it so it will take one second to pass the screen. So i have worked out the speed in code but when I go to assign the speed it tells me to force close and i do not understand why. Here is the code: MainGame Code: @Override protected void onDraw(Canvas canvas) { setBlockSpeed(getWidth()); } private int blockSpeed; private void setBlockSpeed(int screenWidth){ Log.d(TAG, "screenWidth " + screenWidth); blockSpeed = screenWidth / 100; // 100 is the FPS.. i want it to take 1 second to pass the screen Math.round(blockSpeed); // to make it a whole number block.speed = blockSpeed; // if i dont put blockSpeed and put eg 8 it still tells me to force close } Block.java Code: public int speed; public void draw(Canvas canvas) { canvas.drawBitmap(bitmap, x - (bitmap.getWidth() / 2), y - (bitmap.getHeight() / 2), null); if(dontmove == 0){ this.x -= speed; } }

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• Get address using Geocoder in android

  - by user264953

  Hi, I tried to get the address of a particular location by giving static geocordinates. I was not able to fetch the address. Can someone please help. I just need to check whether this function works for me. Here is my snippet. Geocoder geocoder = new Geocoder(AddressSimulator.this, Locale.getDefault()); List<Address> addresses = geocoder.getFromLocation(1.352566007, 103.78921587, 1); System.out.println("Addresses size"+addresses.size()); Address size is obtained as zero. I tried with few other geocordinates also, but address size is always returned as 0. Experts, kindly help me resolve this. Looking forward for your valuable help/suggestions, Best Regards, Rony

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• Dynamically creating Widgets on Android

  - by www.liveinternet.ruusersilya_bog

  Is it possible to create multiple widgets in runtime? Application (Activity) should generate in some cases new widget(or edit exist) with new name and label and do some primitive action on click, which should be available in desktop widgets menu.

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• Does "Ubuntu for Android" (12.04) work with the Samsung Galaxy S2?

  - by Charles Hadeed

  I'm trying to buy a new Android phone and I own an Ubuntu 12.04 computer... I have the choice of a Google Galaxy Nexus, Samsung Galaxy S2, and a HTC Sensation XL. I am aware that the HTC already works with it but i would prefer to buy the samsung. I already have the phone hardware specifications and have checked but i am not sure with the samsung or the nexus. So which of these phones work for Ubuntu 12.04's 'Ubuntu for Android' feature?

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• Programming powering off and powering on in one single OnClick function on android

  - by user1060919

  I would like to write an activity that after clicking on a button turns off the screen and then turns it back on after 2 secs. I tried using the following code in order to power off the screen: WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.screenBrightness = 0/(float)255; getWindow().setAttributes(lp); But it would only take effect when then onClick function returns. I tried running it into a handler but with no success. I need to find a way to force the setting to get applied before the function returns so that I can call the power on function 2 secs later on the same onClick call. I also found it very hard to wakeup the device afterwards. While this code works if I power off the screen using the physical button it doesn't seem to work when the phone is powered off using the technique described previously. PowerManager pm = (PowerManager)this.getSystemService(Context.POWER_SERVICE); PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK|PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE ,"Dev Tag"); try { wl.acquire(); wl.release(); } catch (Exception e) { Toast.makeText(this, e.getMessage(),20).show(); } Thanks you in advance for your help!

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• How to blit() in android?

  - by Lo'oris

  I'm used to handle graphics with old-school libraries (allegro, GD, pygame), where if I want to copy a part of a bitmap into another... I just use blit. I'm trying to figure out how to do that in android, and I got very confused. So... we have these Canvas that are write-only, and Bitmaps that are read-only? It seems too stupid to be real, there must be something I'm missing, but I really can't figure it out.

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• Fragment savedInstanceState is always null (Android support lib)

  - by Evgeny Egorov

  I wrote a simple test project, but I cant understand why I always receive savedInstanceState = null in lifecycle methods onCreate, onCreateView and onActivityCreated. I change the screen orientation, see the log, but state not saved. Tell me please where is my mistake. Thanks. The code of fragment class is: public class TestFragment extends Fragment { private String state = "1"; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (savedInstanceState != null) { //never works state = savedInstanceState.getString("state"); } //always prints 1 Toast.makeText(getActivity(), state, Toast.LENGTH_SHORT).show(); return inflater.inflate(R.layout.fragment_layout, container, false); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("state", "2"); Log.e("", "saved 2"); } }

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• Android: How to track down the origin of a InflateException?

  - by Janusz

  While starting my application I get the following warning in Logcat: 04-09 10:28:17.830: WARN/WindowManager(52): Exception when adding starting window 04-09 10:28:17.830: WARN/WindowManager(52): android.view.InflateException: Binary XML file line #24: Error inflating class <unknown> 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createView(LayoutInflater.java:513) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:385) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.generateLayout(PhoneWindow.java:2153) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.installDecor(PhoneWindow.java:2207) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindow.getDecorView(PhoneWindow.java:1395) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.internal.policy.impl.PhoneWindowManager.addStartingWindow(PhoneWindowManager.java:818) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.server.WindowManagerService$H.handleMessage(WindowManagerService.java:8794) 04-09 10:28:17.830: WARN/WindowManager(52): at android.os.Handler.dispatchMessage(Handler.java:99) 04-09 10:28:17.830: WARN/WindowManager(52): at android.os.Looper.loop(Looper.java:123) 04-09 10:28:17.830: WARN/WindowManager(52): at com.android.server.WindowManagerService$WMThread.run(WindowManagerService.java:531) 04-09 10:28:17.830: WARN/WindowManager(52): Caused by: java.lang.reflect.InvocationTargetException 04-09 10:28:17.830: WARN/WindowManager(52): at android.widget.FrameLayout.<init>(FrameLayout.java:79) 04-09 10:28:17.830: WARN/WindowManager(52): at java.lang.reflect.Constructor.constructNative(Native Method) 04-09 10:28:17.830: WARN/WindowManager(52): at java.lang.reflect.Constructor.newInstance(Constructor.java:446) 04-09 10:28:17.830: WARN/WindowManager(52): at android.view.LayoutInflater.createView(LayoutInflater.java:500) 04-09 10:28:17.830: WARN/WindowManager(52): ... 13 more 04-09 10:28:17.830: WARN/WindowManager(52): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x2/d=0x1010059 a=-1} 04-09 10:28:17.830: WARN/WindowManager(52): at android.content.res.Resources.loadDrawable(Resources.java:1677) 04-09 10:28:17.830: WARN/WindowManager(52): at android.content.res.TypedArray.getDrawable(TypedArray.java:548) 04-09 10:28:17.830: WARN/WindowManager(52): at android.widget.FrameLayout.<init>(FrameLayout.java:91) 04-09 10:28:17.830: WARN/WindowManager(52): ... 17 more My Application starts with the following splash screen: <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:windowBackground="@color/white" android:background="@color/white" android:layout_width="fill_parent" android:layout_height="fill_parent" android:foregroundGravity="center"> <ImageView android:id="@+id/ImageView01" android:layout_width="fill_parent" android:layout_height="fill_parent" android:adjustViewBounds="true" android:scaleType="centerInside" android:src="@drawable/splash" android:layout_gravity="center" /> </ScrollView> Splash is the image that is shown in the splash screen. I have those four folders with for storing drawables in my app: /res/drawable-hdpi /res/drawable-ldpi /res/drawable-mdpi /res/drawable-nodpi the splash image has its own version in the first three of them and is displayed properly. Removing the src property from the ImageView removes the image but not the exception. I'm a little bit lost with where to look for the cause of the exception. I even don't know if this is really an issue in this layout file etc. How would you go about finding the cause for this warning?

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• ScrollBars are not visible after changing positions of controls inside a Canvas

  - by akjoshi

  Hi, I created a custom canvas control inheriting from WPF Canvas. I am using it like this in main window - <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto"> <RTD:RTDesignerCanvas Margin="5" Background="White" x:Name="canvas1" Focusable="True" AllowDrop="True"> </RTD:RTDesignerCanvas> </ScrollViewer> Everyhting works fine but when I try to set the position of controls inside it like this Canvas.SetTop(item, 200); scrollbars are not visible and control is hiddedn down somewhere. Intrestingly, if I add another control to it scroll bars are visible and I can scroll downwards to see the previous control. I tried to use base.InvalidateVisual(); base.UpdateLayout(); base.InvalidateArrange(); after changing items Top or Left but nothing happens; Am I missing something or this happens due to some bug?

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• Dynamic size canvas with Scroll bars

  - by Pawan

  Hi, I am developing a simple WPF application without any auto layout. The goal is when a user clicks (mouse down) a element (say textBlock) will appear at the location of the mouse click. For this I am using canvas panel embedded in a Grid of 1 row, 1 column and scrollviewer (visible). The issues are: 1. when the application window is resized the scroll viewers do not become active. 2. I want the ability to auto grow the canvas with mouse drag. Something like in MS-Excel when user drags the mouse horizontally/vertically the canvas should grow. I have searched net a lot to figure this out and am unable to get an answer. Any help in this regard would be great. Thanks a bunch in advance. -P

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• How to avoid HTML Canvas auto-stretching

  - by Tom

  I have the following piece of HTML: <style type="text/css"> #c{width:200px;height:500px} </style> <canvas id="c"></canvas> <script type="text/javascript"> var i = new Image(); i.onload = function () { var ctx = document.getElementById('c').getContext('2d'); ctx.drawImage(i, 0, 0); } i.width = i.height = 20; // actual size of square.png i.src = 'square.png'; </script> The issue is that the drawn image is automatically stretched (resized) proportionally with the size of the canvas. I have tried using all available parameters (drawImage(i, 0, 0, 20, 20, 0, 0, 20, 20)) and that didn't help. What is causing my drawing to stretch and how can I prevent that? Thanks, Tom

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• Putting WPF Control (ComboBox) into canvas with Visuals

  - by Mikhail

  I am writing a WPF chart and use Visuals for performance. The code looks like: public class DrawingCanvas2 : Canvas { private List<Visual> _visuals = new List<Visual>(); protected override Visual GetVisualChild( int index ) { return _visuals[index]; } protected override int VisualChildrenCount { get { return _visuals.Count; } } public void AddVisual( Visual visual ) { _visuals.Add( visual ); base.AddVisualChild( visual ); base.AddLogicalChild( visual ); } } Beside DrawingVisual elements (line, text) I need a ComboBox in the chart. So I tried this: public DrawingCanvas2() { ComboBox box = new ComboBox(); AddVisual( box ); box.Width = 100; box.Height = 30; Canvas.SetLeft( box, 10 ); Canvas.SetTop( box, 10 ); } but it does not work, there is no ComboBox displayed. What I am missing?

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• Canvas element covering the entire screen?

  - by Stefan Kendall

  I'm trying to use <canvas> in iPhone Safari, and if I place the element in the body, there are unused pixels to the left and top of the element. I tried specifying margin:0;padding:0 with CSS to no avail. What's going on here? <html> <head> $(document).ready(function() { $('#screen').attr("height", $(window).height() ); $('#screen').attr("width", $(window).width() ); //prevent scrolling $(document).bind('touchstart touchmove', function(e) { e.preventDefault(); }); }); </script> </head> <body> <canvas id = "screen"> </canvas> </body> </html>

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• <Tabcontrol and Canvas

  - by prajor

  Hello, I have following situation <stackpanel > <ViewBox height=25/ > <tabcontrol> <tabitem> <Canvas /> </tabitem> </tabcontrol> </stackpanel> Q1. I want stackpanel to fill the screen, tabcontrol to fill the remain portion after viewbox. How do I do that ? How do I avoid the tabcontrol shrinking based on the size of tab items. Q2. I want the canvas restricted to the tabitem size. Currently I put anything in the canvas and scorll it goes beyond the tab item. Any idea how to control this.

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• Text wrap in a <canvas> element

  - by Gwood

  I am trying to add text on an image using the <canvas> element. First the image is drawn and on the image the text is drawn. So far so good. But where I am facing a problem is that if the text is too long, it gets cut off in the start and end by the canvas. I don't plan to resize the canvas, but I was wondering how to wrap the long text into multiple lines so that all of it gets displayed. Can anyone point me at the right direction?

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• How to check if canvas objects overlap each other

  - by ?????? ???????

  I'm trying to check if two objects (e.g. a rectangle and a triangle) on a HTML5 canvas are overlapping each other. Currently I can only check that by looking at the screen (having set globalCompositeOperation='lighter'). My first idea would have been to scan all over the canvas if the "lighter" (compare code snippet above) color exists in the canvas. But therefor I would have to look at every single pixel which was rather costly for what I need. Is there a (better) alternative to automatically check if they are overlapping? Best regards.

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• Basics of html5 and canvas

  - by René Nyffenegger

  As I browse through different questions here, I see that there are a number of questions tagged with html5 and canvas, so I guess they sort of belong together. Now, I have absolutely no idea about the canvas (which is obviously (?) rendered in html5), but it seems that It could be useful one day in the future. So, in order to be prepared when that day comes, I'd like to know the basics about these things. I found a html snippet that is supposed to render such a canvas, but when opened in my browser (firefox) nothing is displayed. So, I guess I need a special plugin or another browser. My question: what are the absolute basic things I need to know and have in order to create a hello world thingy. Please bear in mind that I am completely new with this and don't need no fancy advanced stuff.

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• how to save canvas as png image?

  - by sneaky

  I have a canvas element with a drawing in it, and I want to create a button that when clicked on, it will save the image as a png file. So it should open up the save, open, close dialog box... I do it using this code var canvas = document.getElementById("myCanvas"); window.open(canvas.toDataURL("image/png")); But when I test it out in IE9, a new window opens up saying "the web page cannot be displayed" and the url of it is: data:image/png;base64,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 Anyone know how to fix this?

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