本文介绍了如何使用Intent.ACTION_CREATE_DOCUMENT写入文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
简单来说,我想将视图组转换为jpg图像文件.由于Environment.getExternalStorageDirectory
已被弃用,因此我使用此意图Intent.ACTION_CREATE_DOCUMENT
In simple words, I want to convert a viewgroup to a jpg image file. As Environment.getExternalStorageDirectory
is deprecated, I use this intent Intent.ACTION_CREATE_DOCUMENT
private void createFile(String mimeType, String fileName) {
Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType(mimeType);
intent.putExtra(Intent.EXTRA_TITLE, fileName);
startActivityForResult(intent, WRITE_REQUEST_CODE);
}
在onActivityResult();
中,我得到结果返回的Uri.我的问题是我会使用getExternalStorage()
In the onActivityResult();
I get the Uri returned by the result.My problem is that with getExternalStorage()
I'd use
Bitmap bitmap = Bitmap.createBitmap(
containerLayout.getWidth(),
containerLayout.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
containerLayout.draw(canvas);
FileOutputStream fileOutupStream = null;
try {
fileOutupStream = new FileOutputStream(fileName);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fileOutupStream);
fileOutupStream.flush();
fileOutupStream.close();
Toast.makeText(this, "saved " + fileName, Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(this, "something went wrong" + e.getMessage(), Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
现在我得到了结果返回的Uri,但是,我不知道如何将所需的位图写入此Uri
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
if (resultCode == RESULT_OK && requestCode == WRITE_REQUEST_CODE) {
Uri resultUri = data.getData();
//need help
}
}
推荐答案
您需要使用getContentResolver().openOutputStream
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
if (resultCode == RESULT_OK && requestCode == WRITE_REQUEST_CODE) {
FileOutputStream fileOutupStream = getContentResolver().openOutputStream(data.getData());
try {
fileOutupStream = new FileOutputStream(fileName);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fileOutupStream);
fileOutupStream.flush();
fileOutupStream.close();
Toast.makeText(this, "saved " + fileName, Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(this, "something went wrong" + e.getMessage(), Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}
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