无法摧毁活动Android

Question

这是我的java代码

    @Override
    protected void onDestroy() {
    int i;
    super.onDestroy();
    if (bitmapList != null) {
        for (i = INDEX_COLLAGE; i < bitmapList.length; i += INDEX_COLLAGE_BACKGROUND) {
            if (bitmapList[i] != null) {
                bitmapList[i].recycle();
            }
        }
    }
    if (collageView != null) {
        if (collageView.shapeLayoutList != null) {
            for (i = INDEX_COLLAGE; i < collageView.shapeLayoutList.size(); i += INDEX_COLLAGE_BACKGROUND) {
                for (int j = INDEX_COLLAGE; j < collageView.shapeLayoutList.get(i).shapeArr.length; j += INDEX_COLLAGE_BACKGROUND) {
                    if (collageView.shapeLayoutList.get(i).shapeArr[j] != null) {
                        collageView.shapeLayoutList.get(i).shapeArr[j].freeBitmaps();
                    }
                }
            }
        }
        if (collageView.maskBitmapArray != null) {
            for (i = INDEX_COLLAGE; i < collageView.maskBitmapArray.length; i += INDEX_COLLAGE_BACKGROUND) {
                if (collageView.maskBitmapArray[i] != null) {
                    if (!collageView.maskBitmapArray[i].isRecycled()) {
                        collageView.maskBitmapArray[i].recycle();
                    }
                    collageView.maskBitmapArray[i] = null;
                }
            }
        }
    }
    if (adWhirlLayout != null) {
        adWhirlLayout.removeAllViews();
        adWhirlLayout.destroy();
    }
}
private void backButtonAlertBuilder() {
    AlertDialog.Builder builder = new AlertDialog.Builder(CreateCollageActivity.this);
    builder.setMessage("Would you like to save image ?").setCancelable(true).setPositiveButton("Yes", new OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            if (analytics != null)
                analytics.logEvent(Analytics.Param.IMAGE_SAVE, "");
            new SaveImageTask().execute();
        }
}).setNeutralButton("No", new OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

            finish();
        }
    });

当我单击上一次button..when时，该应用程序崩溃，我调试了它显示的代码java.lang.RuntimeException:无法销毁activity和java.lang.RuntimeException

Answer 1

您应该在super.onDestroy()之前编写所有代码；使这一行成为该方法的最后一条语句。

Answer 2

只需用onBackPressed()替换onDestroy()方法

@Override
public void onBackPressed() {
   super.onBackPressed();
}

，所以您的代码将类似于那个

@Override
    protected void onBackPressed() {
    int i;
    super.onBackPressed();
    if (bitmapList != null) {
        for (i = INDEX_COLLAGE; i < bitmapList.length; i += INDEX_COLLAGE_BACKGROUND) {
            if (bitmapList[i] != null) {
                bitmapList[i].recycle();
            }
        }
    }
    if (collageView != null) {
        if (collageView.shapeLayoutList != null) {
            for (i = INDEX_COLLAGE; i < collageView.shapeLayoutList.size(); i += INDEX_COLLAGE_BACKGROUND) {
                for (int j = INDEX_COLLAGE; j < collageView.shapeLayoutList.get(i).shapeArr.length; j += INDEX_COLLAGE_BACKGROUND) {
                    if (collageView.shapeLayoutList.get(i).shapeArr[j] != null) {
                        collageView.shapeLayoutList.get(i).shapeArr[j].freeBitmaps();
                    }
                }
            }
        }
        if (collageView.maskBitmapArray != null) {
            for (i = INDEX_COLLAGE; i < collageView.maskBitmapArray.length; i += INDEX_COLLAGE_BACKGROUND) {
                if (collageView.maskBitmapArray[i] != null) {
                    if (!collageView.maskBitmapArray[i].isRecycled()) {
                        collageView.maskBitmapArray[i].recycle();
                    }
                    collageView.maskBitmapArray[i] = null;
                }
            }
        }
    }
    if (adWhirlLayout != null) {
        adWhirlLayout.removeAllViews();
        adWhirlLayout.destroy();
    }
}
private void backButtonAlertBuilder() {
    AlertDialog.Builder builder = new AlertDialog.Builder(CreateCollageActivity.this);
    builder.setMessage("Would you like to save image ?").setCancelable(true).setPositiveButton("Yes", new OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            if (analytics != null)
                analytics.logEvent(Analytics.Param.IMAGE_SAVE, "");
            new SaveImageTask().execute();
        }
}).setNeutralButton("No", new OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

            finish();
        }
    });