java无法从“活动”文件夹打开图像?
我可以在我的应用程序的软件包文件夹中保存相机的图像,但情况就是这样,当我尝试打开该文件夹中的图像时,我收到消息:“无法打开”
我已经尝试将图像移动到图片文件夹,它打开得很好。那么,问题出在哪里呢。这就是我到目前为止所尝试的
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mFile = new File(getActivity().getExternalFilesDir(null), "pic.jpg");
}
private static class ImageSaver implements Runnable {
/**
* The JPEG image
*/
private final Image mImage;
/**
* The file we save the image into.
*/
private final File mFile;
ImageSaver(Image image, File file) {
mImage = image;
mFile = file;
}
@Override
public void run() {
ByteBuffer buffer = mImage.getPlanes()[0].getBuffer();
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
FileOutputStream output = null;
try {
output = new FileOutputStream(mFile);
output.write(bytes);
} catch (IOException e) {
e.printStackTrace();
} finally {
mImage.close();
if (null != output) {
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
/**
*/
Reading the image
public class SingleMediaScanner implements MediaScannerConnection.MediaScannerConnectionClient {
private MediaScannerConnection mMs;
private File mFile;
public SingleMediaScanner(Context context, File f) {
mFile = f;
mMs = new MediaScannerConnection(context, this);
mMs.connect();
}
public void onMediaScannerConnected() {
mMs.scanFile(mFile.getAbsolutePath(), null);
}
public void onScanCompleted(String path, Uri uri) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(uri);
startActivity(intent);
mMs.disconnect();
}
}
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new SingleMediaScanner(getActivity(), allFiles[0]);
}
});
显示
<uses-permission 安卓:name="安卓.permission.CAMERA"/>
<uses-permission 安卓:name="安卓.permission.FLASHLIGHT"/>
<uses-permission 安卓:name="安卓.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-feature 安卓:name="安卓.hardware.camera2.full"/>
# 1 楼答案
如果要保存在内部文件夹中
然后将此文件传递给图像保护程序