我正在为Android开发一个应用程序,该应用程序应该从相机拍摄照片并将这些图像用作该应用程序的头像。但是,该应用程序对于前3-4张照片运行良好,但是当我尝试拍摄更多照片时,该应用程序崩溃了。原因是内存泄漏。
这是启动摄影机意图的代码:
String fileName = "temp.jpg";
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
mCapturedImageURI = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
takePictureIntent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
startActivityForResult(takePictureIntent,RESULT_LOAD_IMAGE_CAMERA);
这是接收意图的代码:
if (requestCode == RESULT_LOAD_IMAGE_CAMERA && resultCode == RESULT_OK ) {
String[] projection = { MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(mCapturedImageURI, projection, null, null, null);
final int column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String capturedImageFilePath = cursor.getString(column_index_data);
profilePic.setImageURI(Uri.fromFile(new File(capturedImageFilePath)));
}
这是日志:
02-28 18:28:36.727: E/dalvikvm-heap(4081): 9830400-byte external allocation too large for this process.
02-28 18:28:36.727: E/GraphicsJNI(4081): VM won't let us allocate 9830400 bytes
02-28 18:28:36.824: E/AndroidRuntime(4081): FATAL EXCEPTION: main
02-28 18:28:36.824: E/AndroidRuntime(4081): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:562)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:426)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.graphics.drawable.Drawable.createFromStream(Drawable.java:657)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.widget.ImageView.resolveUri(ImageView.java:509)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.widget.ImageView.setImageURI(ImageView.java:293)
02-28 18:28:36.824: E/AndroidRuntime(4081): at com.octanetech.cortes.ProfileActivity.onActivityResult(ProfileActivity.java:596)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.Activity.dispatchActivityResult(Activity.java:3890)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.ActivityThread.deliverResults(ActivityThread.java:3511)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3557)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.ActivityThread.access$2800(ActivityThread.java:125)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2063)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.os.Handler.dispatchMessage(Handler.java:99)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.os.Looper.loop(Looper.java:123)
02-28 18:28:36.824: E/AndroidRuntime(4081): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-28 18:28:36.824: E/AndroidRuntime(4081): at java.lang.reflect.Method.invokeNative(Native Method)
02-28 18:28:36.824: E/AndroidRuntime(4081): at java.lang.reflect.Method.invoke(Method.java:521)
02-28 18:28:36.824: E/AndroidRuntime(4081): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
02-28 18:28:36.824: E/AndroidRuntime(4081): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
02-28 18:28:36.824: E/AndroidRuntime(4081): at dalvik.system.NativeStart.main(Native Method)
任何帮助将不胜感激。
最佳答案
最后我自己解决了这个问题。导致内存泄漏的主要问题是我没有回收位图对象。我只是用另一个位图图像替换了位图对象。以为该对象已被另一个位图图像替换,但内存中仍然存在以前的位图图像。因此,在从Camera拍摄多张图像时,位图图像堆积起来,并引发了内存不足的异常情况。
因此,在将新图像分配给Bitmap对象之前,我玩了一个技巧来回收(删除)Bitmap图像。
我刚用过
mImageBitmap.recycle();
这冲走了以前的位图图像,并且没有发生内存泄漏。希望它也对其他人有所帮助。