我有一个图库应用程序,它也有相机功能。拍照后,我的On Activity Result会调用媒体扫描仪来扫描文件。虽然它确实扫描了文件,LogCat报告了它的确切位置,并将其保存在指定的目录中,但我的图库和其他图片(如谷歌照片)直到下次重新启动或很长一段时间后才会显示图像。我做错了什么?
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == SETTINGS_REQUEST && resultCode == Activity.RESULT_OK) {
MediaFragment content = (MediaFragment) getFragmentManager().findFragmentById(com.marlonjones.aperture.R.id.content_frame);
if (content != null) content.reload();
reloadNavDrawerAlbums();
}
if (requestCode == NEW_PICTURE) {
if (resultCode == Activity.RESULT_OK) {
Uri uri = null;
if (data != null) {
uri = data.getData();
}
if (uri == null && mCameraFileName != null) {
uri = Uri.fromFile(new File(mCameraFileName));
}
Date date = new Date();
DateFormat df = new SimpleDateFormat("-mm-ss");
String newPicFile = "PH" + df.format(date) + ".jpg";
String outPath = "/sdcard/Aperture/" + newPicFile;
MediaScannerConnection.scanFile(this,
new String[]{Uri.fromFile(new File (outPath)).toString()}, null,
new MediaScannerConnection.OnScanCompletedListener() {
@Override
public void onScanCompleted(String path, Uri uri) {
Log.i("ExternalStorage", "Scanned " + path + ":");
Log.i("ExternalStorage", "-> uri=" + uri);
}
});
}
}
}
public void camera(MenuItem menu) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
int hasCameraPermission = checkSelfPermission(Manifest.permission.CAMERA);
if (hasCameraPermission != PackageManager.PERMISSION_GRANTED) {
requestPermissions(new String[]{Manifest.permission.CAMERA},
REQUEST_CODE_ASK_PERMISSIONS);
return;
}
Intent intent = new Intent();
intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
Date date = new Date();
DateFormat df = new SimpleDateFormat("-mm-ss");
String newPicFile = "PH" + df.format(date) + ".jpg";
String outPath = "/sdcard/Aperture/" + newPicFile;
File outFile = new File(outPath);
mCameraFileName = outFile.toString();
Uri outuri = Uri.fromFile(outFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outuri);
startActivityForResult(intent, NEW_PICTURE);
}
else {
Intent intent = new Intent();
intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
Date date = new Date();
DateFormat df = new SimpleDateFormat("-mm-ss");
String newPicFile = "PH" + df.format(date) + ".jpg";
String outPath = "/sdcard/Aperture/" + newPicFile;
File outFile = new File(outPath);
mCameraFileName = outFile.toString();
Uri outuri = Uri.fromFile(outFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outuri);
startActivityForResult(intent, NEW_PICTURE);
}
}}
从不硬编码路径。当与辅助帐户一起使用时,您的代码对于数亿Android设备是不正确的。使用方法获取文件系统位置。在您的情况下,替换:
String outPath = "/sdcard/Aperture/" + newPicFile;
带有:
File picFile=new File(new File(Environment.getExternalStorageDirectory(), "Aperture"), newPicFile);
其次,scanFile()
采用路径数组,而不是Uri
值。替换:
new String[]{Uri.fromFile(new File (outPath)).toString()}
带有:
new String[]{picFile.getAbsolutePath()}