Android：由于 ImageView 导致的内存错误？答案

【问题标题】：Android: Memory error because of an ImageView?Android：由于 ImageView 导致的内存错误？
【发布时间】：2013-02-04 09:52:39
【问题描述】：

我有 2 个活动 Activity A = GameActivity 使用 PhotoTask.class 的一个实例，它扩展了 AsyncTask 并用于拍摄和保存图片。图片保存后，我启动 Activity B = ShareActivity。

当我拍照并且不改变方向时，会调用 Activity B 并且一切正常。然而，如果我改变屏幕的方向来拍照（我从纵向转到横向），我在拍照时会出错（活动 B 没有启动）。

我什至在我的代码中注释了我的位图图像，但仍然有位图错误！奇怪是，如果我在我的代码中注释 ImageView5（它没有做任何特别的事情）并保留我的位图，我没有错误。问题似乎来自这个 ImageView 但我无法解释它

我在清单中添加了 configChanges:orientation，回收了我的 bnitmap，使用了活动的 WeakReference 而不是活动本身作为 PhotoTask 中的变量，尝试使用 eclipse 内存分析器 (Android: Detecting leaks with Eclipse Memory Analyzer) 查看内存泄漏，但没有了解我为什么会出现这些错误

我真的搜索了很多，我变得非常绝望，所以如果你能帮助我，那就太好了

02-04 10:03:04.353: E/AndroidRuntime(17427): FATAL EXCEPTION: main
02-04 10:03:04.353: E/AndroidRuntime(17427): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.kersplatt/com.example.kersplatt.ShareActivity}: android.view.InflateException: Binary XML file line #23: Error inflating class <unknown>
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.os.Looper.loop(Looper.java:130)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread.main(ActivityThread.java:3683)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at java.lang.reflect.Method.invokeNative(Native Method)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at java.lang.reflect.Method.invoke(Method.java:507)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at dalvik.system.NativeStart.main(Native Method)
02-04 10:03:04.353: E/AndroidRuntime(17427): Caused by: android.view.InflateException: Binary XML file line #23: Error inflating class <unknown>
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.createView(LayoutInflater.java:518)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.Activity.setContentView(Activity.java:1657)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at com.example.kersplatt.ShareActivity.onCreate(ShareActivity.java:64)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
02-04 10:03:04.353: E/AndroidRuntime(17427):    ... 11 more
02-04 10:03:04.353: E/AndroidRuntime(17427): Caused by: java.lang.reflect.InvocationTargetException
02-04 10:03:04.353: E/AndroidRuntime(17427):    at java.lang.reflect.Constructor.constructNative(Native Method)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.view.LayoutInflater.createView(LayoutInflater.java:505)
02-04 10:03:04.353: E/AndroidRuntime(17427):    ... 23 more
02-04 10:03:04.353: E/AndroidRuntime(17427): Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:460)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:336)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.content.res.Resources.loadDrawable(Resources.java:1709)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.widget.ImageView.<init>(ImageView.java:118)
02-04 10:03:04.353: E/AndroidRuntime(17427):    at android.widget.ImageView.<init>(ImageView.java:108)
02-04 10:03:04.353: E/AndroidRuntime(17427):    ... 26 more

为了您的信息，我的代码片段

public class ShareActivity extends Activity implements OnClickListener{
    public static final String APP_ID = "**********";
    Facebook facebook = new Facebook(APP_ID);
    AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
    String FILENAME = "AndroidSSO_data";
    SharedPreferences mPrefs;
    Handler mHandler;
    File file;
    byte[] bytes;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.w("SHAREACTIVITY","SECOND");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.share);
        file = (File) this.getIntent().getExtras().get("PICTURE_TAKEN");
        Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
        Bitmap mutableBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
        **ImageView image5 = (ImageView) findViewById(R.id.imageView5);**
        **image5.setImageBitmap(mutableBitmap);**
        bitmap.recycle();
        mutableBitmap.recycle();

    }

课堂摄影

public class PhotoTask extends AsyncTask<Boolean, Void, Void> {
    private Camera camera;
    private SurfaceView surfaceCamera;
    private boolean isPreview=false;
    private SurfaceHolder holder;
    private WeakReference<GameActivity> weakgameactivity;
    GameActivity gameactivity;
    private File output;

    public PhotoTask(Camera camera, SurfaceView surfaceCamera,boolean isPreview, SurfaceHolder holder, GameActivity gameactivity) {
        super();
        this.camera = camera;
        this.surfaceCamera = surfaceCamera;
        this.isPreview = isPreview;
        this.holder = holder;
        this.weakgameactivity = new WeakReference<GameActivity>(gameactivity);
        this.gameactivity=this.weakgameactivity.get();
    }


    PictureCallback myPictureCallback_JPG = new PictureCallback(){

        @Override
        public void onPictureTaken(byte[] data, Camera camera) {
            Log.w("GAMEACTIVITY","FIRST");
//          ImageView image5 = (ImageView) gameactivity.findViewById(R.id.imageView6);
            File imagesFolder = new File(Environment.getExternalStorageDirectory(), "/KersplattFolder");

            imagesFolder.mkdirs(); 
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
            String date = dateFormat.format(new Date());
            String fileName = "Kersplatt_" + date + ".jpg";
            output = new File(imagesFolder, fileName);
            ImageView view = (ImageView) gameactivity.findViewById(R.id.imageView6);
            view.setDrawingCacheEnabled(true);
            Bitmap b = view.getDrawingCache();
            FileOutputStream fos = null;
            try {
                fos = new FileOutputStream(output);
            } catch (FileNotFoundException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            b.compress(CompressFormat.JPEG, 95, fos);
            try {
            fos.write(data);
            fos.close();
            } catch (FileNotFoundException e) {
                    e.printStackTrace();
            }
              catch (IOException e) {
                    e.printStackTrace();
            }
              camera.stopPreview();
              Log.w("GAMEACTIVITY","INTENT");
              b.recycle();
              Intent intent = new Intent(gameactivity.getApplicationContext(),ShareActivity.class);
              // Sending the picture taken to ShareActivity
              intent.putExtra("PICTURE_TAKEN", output);
              gameactivity.startActivity(intent);
        }

    };

    @Override
    protected Void doInBackground(Boolean... params) {
         camera.takePicture(null,null, myPictureCallback_JPG);
            Log.w("GAMEACTIVITY","TAKEPICTURE");
            return null;
    }


}

我的图像视图5

   <ImageView
         android:id="@+id/imageView5"
         android:layout_width="85dp"
         android:layout_height="100dp"
         android:layout_marginLeft="8dp"
         android:layout_marginTop="20dp"
         android:adjustViewBounds="true"
         android:src="@drawable/diviseur" />

【问题讨论】：

你必须在应用到图像视图之前对其进行解码..
在 manifiest.xml 文件中，您对以下属性有什么属性？ android:screenOrientation=
这不是问题，因为当我评论将位图放入图像视图的部分时，我仍然有错误 android.view.InflateException: Binary XML file line #23: Error inflating class （我的 imageview5 在哪里），而我什么都不做！我没有指定 ScreenOrientation 但我有 android:configChanges="orientation|keyboardHidden 用于我的 2 个活动

标签： android eclipse memory-leaks imageview

【解决方案1】：

拍照后，您需要使用 Image resize 来调整图像大小，将 Image 和所需的新宽度和高度传递给它。如果在 clcik DDMS 上跟踪堆，然后在设备列表上的 evice 并调试代码，您将看到图像的大小增加 exra 普通看看官方文档中的Loading large bitmap Efficiently

看完后你可以试试下面的代码，你的问题就会解决

 /** getResizedBitmap method is used to Resized the Image according to custom width and height 
  * @param image
  * @param newHeight (new desired height)
  * @param newWidth (new desired Width)
  * @return image (new resized image)
  * */
public static Bitmap getResizedBitmap(Bitmap image, int newHeight, int newWidth) {
    int width = image.getWidth();
    int height = image.getHeight();
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;
    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map
    matrix.postScale(scaleWidth, scaleHeight);
    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(image, 0, 0, width, height,
            matrix, false);
    return resizedBitmap;
}

【讨论】：

查看我的评论“我认为这不是问题，因为当我评论将位图放入图像视图的部分时，我仍然有错误 android.view.InflateException: Binary XML file line #23：错误膨胀类（我的 imageview5 所在的位置），而我什么都不做！”

【解决方案2】：

正如 Usman Kurd 所说，您将（完整）图像加载到内存中，并在内存中创建该图像的副本。这会占用大量内存。他引用的文档指出：

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(getResources(), R.id.myimage, options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;

你的内存不足发生在这些行中，而不是在 imageview 中设置图像

Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
Bitmap mutableBitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);

如果您使用此 android，则不会将整个位图加载到内存中，而是按比例缩小版本。阅读文档，您的错误肯定会消失。

上面的代码只会解码边界。 documentation 解释了如何使用它。请参阅名为“将缩小版本加载到内存中”的章节如何正确实现这一点

【讨论】：