I have been stuck on this for a while now and have looked at various tutorials for help but have not yet succeeded.
I have essentially utilised the camera
function in my app to take pictures and display a preview
of it BUT it can't save taken picture.
Here is the java
code containing my attempt to get it functioning according to tutorials:
public class Activity_Camera extends Activity implements View.OnClickListener {
ImageButton ib;
ImageView iv;
Intent i;
public static final int cameraData = 0;
Bitmap bmp;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.Info:
Intent i = new Intent(this, Help.class);
startActivity(i);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
initialise();
}
private void initialise() {
iv = (ImageView) findViewById(R.id.ivPicReturn);
ib = (ImageButton) findViewById(R.id.ibTakePic);
ib.setOnClickListener(this);
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.ibTakePic:
i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, cameraData);
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);
Toast.makeText(this, "Image saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}
private static File getOutputMediaFile(int type){
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyCameraApp");
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("MyCameraApp", "failed to create directory");
return null;
}
}
File mediaFile;
if (type == cameraData){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_" + ".jpg");
} else {
return null;
}
return mediaFile;
}
}
I have already included all the neccessary permissions
within the Manifest.xml
file.
File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
imagesFolder.mkdirs();
File image = new File(imagesFolder, "image.jpg");
Uri uriSavedImage = Uri.fromFile(image);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
Have a look at this link.How to save images from Camera in Android to specific folder?
In your onClick
where you call the Intent you should specify the output file by utilizing your existing getOutputMediaFileUri
like this:
i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, getOutputMediaFileUri());
startActivityForResult(i, cameraData);
So now YOU are telling the camera where to save the file rather than asking where it was saved. This is how I got my camera app to work so that I could access the picture after it was snapped.
来源:https://stackoverflow.com/questions/15214321/saving-pictures-taken-by-camera-in-android-app