java.lang.OutOfMemoryError即使在try-catch块中？

Question

我的应用程序崩溃,在logcat中显示:

java.lang.OutOfMemoryError: (Heap Size=39047KB, Allocated=19932KB)
        at android.graphics.BitmapFactory.nativeDecodeFile(Native Method)
        at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:373)
        at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:443)
        at com.mApp.mobileapp.mActivity.onActivityResult(mActivity.java:196)
        at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:153)
        at android.app.Activity.dispatchActivityResult(Activity.java:4752)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:3449)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:3503)
        at android.app.ActivityThread.access$1100(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1320)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:156)
        at android.app.ActivityThread.main(ActivityThread.java:5109)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:991)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:758)
        at dalvik.system.NativeStart.main(Native Method)

在运行此代码时:

String selectedImagePath = data.getStringExtra("imageByteCode");
try {
    File imageFile = new File(selectedImagePath);
    Bitmap bitmap = BitmapFactory.decodeFile(imageFile
        .getAbsolutePath());//line 196
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    base64code = selectedImagePath;
    mImage.setImageBitmap(bitmap);
    } catch (Exception e) {
    }

因为我正在捕捉它,我从没想到它会崩溃应用程序.selectedImagePath是SD卡上所选图像的路径,从不超过3m.b但堆大小= 39047KB,分配= 19932KB ??

谢谢

Answer 1

放置android:largeHeap="true"在你的下清单文件的应用程序标签.

该largeHeap告诉VM给你更多的内存,所以你可以管理大位图和字符串. LargeHeap适用于api 12+.

如果你想用try/catch块捕获错误,你需要使用

try
        {

        }catch (OutOfMemoryError e) {
            // TODO: handle exception
        }

如果您在Android Studio中构建项目时遇到此问题

Error:Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded

添加build.gradle文件

dexOptions {
    javaMaxHeapSize "4g"
}

Answer 2

您没有抓住它。OutOfMemoryError源自Error而非源自Exception。这是Error因为通常不应该使用应用程序来捕获它，因此应用程序几乎无法恢复。