public class CameraActivity extends Activity {
ImageView imgFavorite;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
imgFavorite = (ImageView)findViewById(R.id.imageView1);
// set listener on image view
imgFavorite.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// open cam
open();
}
});
}
public void open(){
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
//we will use this function startActivityForResult() to launch this activity and wait for its result.
startActivityForResult(intent, 0);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
Bitmap bp = (Bitmap) data.getExtras().get("data");
imgFavorite.setImageBitmap(bp);
}
这是我的代码,它使用现有的相机应用程序来捕获图像..但它不适用于某些Android设备..它不会将捕获图像保存在图库中..如何解决此问题?
同时使用此权限:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
使用这个:
ImageView drawingVIew = (ImageView) findViewById(R.id.drawing);//let this be your image view
//your other code
drawingVIew.setDrawingCacheEnabled(true);
String imgSaved = MediaStore.Images.Media.insertImage(
getContentResolver(), drawingVIew.getDrawingCache(),
UUID.randomUUID().toString() + ".png", "drawing");
if (imgSaved != null) {
Toast savedToast = Toast.makeText(getApplicationContext(),
"Drawing saved to Gallery!", Toast.LENGTH_SHORT);
savedToast.show();
} else {
Toast unsavedToast = Toast.makeText(getApplicationContext(),
"Oops! Image could not be saved.", Toast.LENGTH_SHORT);
unsavedToast.show();
}
drawingVIew.destroyDrawingCache();
是的,您可以压缩文件。 这取决于您使用的百分比。你应该为你想要的结果选择最好的数字。就像我在以下代码中使用 100 一样
try {
FileOutputStream fos = new FileOutputStream(yourImage);
//here change the value from 100 to your best result of compressing
the photo before saving . and this will also update the gallery
newImage.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.close();
//refreshing gallery
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
mediaScanIntent.setData(Uri.fromFile(yourImage));
sendBroadcast(mediaScanIntent);
} catch (IOException e) {
Toast.makeText(this, "Pic not saved", Toast.LENGTH_SHORT).show();
return;
}