Question

我正在使用BitmapFactory重置为无效标记，尽管我得到的Bitmap不是null并且是一个有效的Jpeg。我做错了什么？

logcat的：

01-15 18:54:42.141 12533-12533/com.example.carlo.regional2 E/RecyclerView: No adapter attached; skipping layout
01-15 18:55:01.531 12533-12625/com.example.carlo.regional2 E/NewPostTaskFragment: Error occurred during resize: Resetting to invalid mark
01-15 18:55:01.533 12533-12533/com.example.carlo.regional2 E/NewPostActivity: Couldn't resize bitmap in background task.

一段代码：

class LoadResizedBitmapTask extends AsyncTask<Uri, Void, Bitmap> {
    private int mMaxDimension;
public LoadResizedBitmapTask(int maxDimension) {
    mMaxDimension = maxDimension;
}

// Decode image in background.
@Override
protected Bitmap doInBackground(Uri... params) {
    Uri uri = params[0];
    //ZC

    try {
    InputStream stream = new BufferedInputStream(
            mApplicationContext.getContentResolver().openInputStream(uri));
    stream.mark(stream.available());
    Bitmap bitmap = BitmapFactory.decodeStream(stream);
    stream.reset();
    return bitmap;
    } catch (FileNotFoundException e) {
        Log.e(TAG, "Can't find file to resize: " + e.getMessage());
        FirebaseCrash.report(e);
    } catch (IOException e) {
        Log.e(TAG, "Error occurred during resize: " + e.getMessage());
        FirebaseCrash.report(e);
    }

Answer 1

Java的流API带来了一些不可取的东西。

在这种情况下，ts和mark()并不总是有效，特别是对于由文件系统上的简单文件以外的其他内容支持的流。如果您想使用它们，请先致电reset()。

后备是从markSupported()请求新流。

BitmapFactory.decodeStream（）：IOException重置为无效标记

1 个答案: