保存图片到相册:
private void saveImageToAlbum(Bitmap bmp) {
//检测是否有写的权限
if (!isGrantExternalRW(this)) {
return;
}
String filePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getPath() + "/"
+ System.currentTimeMillis() + ".png";
try {
File tempFile = new File(filePath);
if(tempFile.exists()){
tempFile.delete();
}
tempFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(tempFile);
bmp.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
Toast.makeText(this, "保存相册成功", Toast.LENGTH_SHORT).show();
//将该文件扫描到相册
MediaScannerConnection.scanFile(this, new String[] { tempFile.getPath() }, null,null);
} catch (Exception e) {
e.printStackTrace();
}
}
检测是否有写权限:
private boolean isGrantExternalRW(WebActivity activity) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && activity.checkSelfPermission(
Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
activity.requestPermissions(new String[]{
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
}, 1);
return false;
}
return true;
}