[英]android - save an image into gallery
我正在嘗試將圖像保存到android畫廊中,但是不幸的是,它沒有出現。
我的圖片回調如下:
Camera.PictureCallback mPicture = new Camera.PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFileDir = getDir("images", 0);
if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {
Toast.makeText(getApplicationContext(), "Can't create directory to save image.",
Toast.LENGTH_LONG).show();
return;
}
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "Picture_" + date + ".jpg";
String filename = pictureFileDir.getPath() + File.separator + photoFile;
File pictureFile = new File(filename);
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
Toast.makeText(getApplicationContext(), "New Image saved:" + photoFile,
Toast.LENGTH_LONG).show();
//Insert image into gallery
Bitmap bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory().getAbsolutePath() + pictureFile.getPath());
MediaStore.Images.Media.insertImage(getContentResolver(), bitmap, photoFile , "My Image");
} catch (Exception error) {
Toast.makeText(getApplicationContext(), "Image could not be saved.",
Toast.LENGTH_LONG).show();
}
//...
}
};
我認為該圖像已正確保存在應用程序數據中,但未顯示在圖庫中。
我的應用程序需要以下兩個權限:
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
不幸的是,此代碼仍然無法正常工作。 有什么不對嗎?
只是錯誤的文件路徑。
Bitmap bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory().getAbsolutePath() + pictureFile.getPath());
需要我
Bitmap bitmap = BitmapFactory.decodeFile(pictureFile.getPath());
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