Android 将位图保存到 SD 卡
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Android saving Bitmap to SD card
提问by John Jared
I have a button, and I want when I click on it the image gets saved into the sd card ( or the internal storage, as in htc one x we don't have an external storage like an sd card )
我有一个按钮，我希望当我点击它时图像被保存到 SD 卡（或内部存储，如在 htc one x 我们没有像 SD 卡这样的外部存储）
this is my code:
这是我的代码：
sd.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
MpClick.start();
File myDir=new File("/sdcard/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);
bitMapToShare.compress(Bitmap.CompressFormat.JPEG, 600, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
});
and how do I make a message appears in it it's written "Your image was saved." like an alert but for 2seconds and then disappears
以及如何在其中显示一条消息，上面写着“您的图像已保存”。像警报一样，但持续 2 秒然后消失
回答by RajaReddy PolamReddy
try this
尝试这个
private void SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStorageDirectory().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);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
and add this in manifest
并将其添加到清单中
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Look at this answer Android saving file to external storage
看看这个答案Android将文件保存到外部存储
EDIT: By using this line you can able to see saved images in the gallery view.
编辑：通过使用此行，您可以在图库视图中查看保存的图像。
sendBroadcast(new Intent(
Intent.ACTION_MEDIA_MOUNTED,
Uri.parse("file://" + Environment.getExternalStorageDirectory())));
回答by Numair
Use Toast message
使用Toast 消息
like
喜欢
Toast.makeText(Your_class_name.this,
"Your image is saved to this folder", Toast.LENGTH_LONG)
.show();
