所以我有一个位图,在我编辑之后我希望用户可以保存它并在图库中查看它。我在谷歌搜索,发现很多想法,但我尝试过的都没有用。这是我的代码:
((ImageButton) findViewById(R.id. imageButton)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String root = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-" + n + ".jpg";
File file = new File(myDir, fname);
if (file.exists())
file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
mutableBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
}
catch (Exception e) {
e.printStackTrace();
}
// Tell the media scanner about the new file so that it is
// immediately available to the user.
MediaScannerConnection.scanFile(MainActivity7.this, new String[] { file.toString() }, null,
new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri) {
Log.i("ExternalStorage", "Scanned " + path + ":");
Log.i("ExternalStorage", "-> uri=" + uri);
}
});
}
});
那么什么是错的,或者您是否有任何其他解决方案如何在库中保存我的位图?
答案 0 :(得分:0)
转到设置>应用程序和查找您的应用程序是否允许存储权限。如果没有,请允许并重试。