Android:从对话框片段调用onActivityResult() [英] Android: Call onActivityResult() from dialog fragment
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问题描述
当我在活动中使用对话框片段时，onActivityResult()正确调用，但是由于需要，现在我将活动更改为片段.在这种情况下，图像不会从相机和图库加载到imageview .....
When I was using a dialog fragment inside a activity then onActivityResult() is calling correctly but now i have changed activity to fragment due to my requirement . In that case images are not loading to imageview from camera and gallery.....
我用来调用对话框片段的代码是...
Code i was using to call in dialog fragment is...
Intent in = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
getActivity().startActivityForResult(in, RESULT_LOAD_IMAGE);
片段........
Code used in fragment ........
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{ // Load the images from gallery and camera
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getActivity().getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) getActivity().findViewById(R.id.icon);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
else if (requestCode == TAKE_REQUEST && resultCode == Activity.RESULT_OK) {
pic = (Bitmap) data.getExtras().get("data");
icon.setImageBitmap(pic);
}
}
用于片段交易的代码是....
Code used for fragment transaction is ....
MyDialogFragment myDialogFragment = new MyDialogFragment();
myDialogFragment.show(getActivity().getFragmentManager(), "DialogFragment");
对话框片段的所有代码......
Over all code of dialog fragment.........
public class MyDialogFragment extends DialogFragment implements View.OnClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NORMAL, R.style.MY_DIALOG);
}
@Override
public void onStart() {
super.onStart();
Dialog d = getDialog();
if (d!=null){
int width = ViewGroup.LayoutParams.MATCH_PARENT;
int height = ViewGroup.LayoutParams.MATCH_PARENT;
d.getWindow().setLayout(width, height);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.my_fragment, container, false);
ImageButton FAB=(ImageButton)root.findViewById(R.id.imagesave);
FAB.setOnClickListener(this);
LinearLayout linearbutton=(LinearLayout)root.findViewById(R.id.linearbutton);
LinearLayout linearLayout=(LinearLayout)root.findViewById(R.id.linear);
linearLayout.setOnClickListener(this);
ImageButton text=(ImageButton)root.findViewById(R.id.imageText);
text.setOnClickListener(this);
ImageButton pencil=(ImageButton)root.findViewById(R.id.imagePencil);
pencil.setOnClickListener(this);
ImageButton gallery=(ImageButton)root.findViewById(R.id.imageGallery);
gallery.setOnClickListener(this);
ImageButton camera=(ImageButton)root.findViewById(R.id.imageCamera);
camera.setOnClickListener(this);
return root;
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.imagesave: {
getDialog().dismiss();
pDialog = new ProgressDialog(getActivity());
pDialog.setTitle("Saving");
pDialog.setMessage("please wait..............");
pDialog.setCancelable(false);
pDialog.show();
FAB.setVisibility(View.INVISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
pDialog.dismiss();
FAB.setVisibility(View.VISIBLE);
//Toast.makeText(getActivity(), "File saved successfully", Toast.LENGTH_SHORT).show();
}
}, 2000);
radioGroup.setVisibility(View.INVISIBLE);
linearLayout.setVisibility(View.INVISIBLE);
imagesize.setVisibility(View.INVISIBLE);
clear.setVisibility(View.INVISIBLE);
RelativeLayout content = (RelativeLayout) getActivity().findViewById(R.id.relative);
content.setDrawingCacheEnabled(true);
Bitmap bitmap = content.getDrawingCache();
File myDir = new File("/sdcard/MyCollection");
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();
FileOutputStream outStream;
try {
outStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
i = 0;
break;
}
case R.id.linear: {
getDialog().dismiss();
break;
}
case R.id.imageText:
{
editText.setVisibility(View.VISIBLE);
relativeLayout.setVisibility(View.INVISIBLE);
imagesize.setVisibility(View.INVISIBLE);
radioGroup.setVisibility(View.VISIBLE);
clear.setVisibility(View.INVISIBLE);
linearLayout.setVisibility(View.VISIBLE);
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
Toast.makeText(getActivity(), "You have selected text ", Toast.LENGTH_SHORT).show();
getDialog().dismiss();
break;
}
case R.id.imagePencil: {
getDialog().dismiss();
clear.setVisibility(View.VISIBLE);
relativeLayout.setVisibility(View.VISIBLE);
imagesize.setVisibility(View.INVISIBLE);
radioGroup.setVisibility(View.INVISIBLE);
linearLayout.setVisibility(View.INVISIBLE);
Toast.makeText(getActivity(),"You have selected pencil ",Toast.LENGTH_SHORT).show();
i=0;
break;
}
case R.id.imageGallery: {
getDialog().dismiss();
clear.setVisibility(View.INVISIBLE);
relativeLayout.setVisibility(View.INVISIBLE);
radioGroup.setVisibility(View.INVISIBLE);
linearLayout.setVisibility(View.INVISIBLE);
imagesize.setVisibility(View.VISIBLE);
final Fragment callingFragment = getActivity().getFragmentManager().findFragmentById();
Intent in = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
callingFragment.startActivityForResult(in, RESULT_LOAD_IMAGE);
Toast.makeText(getActivity(), "You have selected gallery", Toast.LENGTH_SHORT).show();
break;
}
case R.id.imageCamera: {
getDialog().dismiss();
relativeLayout.setVisibility(View.INVISIBLE);
clear.setVisibility(View.INVISIBLE);
radioGroup.setVisibility(View.INVISIBLE);
linearLayout.setVisibility(View.INVISIBLE);
imagesize.setVisibility(View.VISIBLE);
startActivityForResult(new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE), TAKE_REQUEST);
Toast.makeText(getActivity(), "You have selected camera", Toast.LENGTH_SHORT).show();
break;
}
}
}
}
推荐答案
您需要从片段中调用活动.将您的呼叫更改为:
You need to call the activity from your fragment. Change your call to:
Intent in = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
yourFragment.startActivityForResult(in, RESULT_LOAD_IMAGE);
更新:
在您的对话框片段中输入以下内容:
In your dialog fragment write something like this:
final Fragment callingFragment = getActivity().getFragmentManager().findFragmentById();
Intent in = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
callingFragment.startActivityForResult(in, RESULT_LOAD_IMAGE);
根据您的设置，您可能需要 getSupportFragmentManager()和/或方法 findFragmentByTag().这取决于您添加片段的方式和位置.
Depending on your setup you may need to getSupportFragmentManager() and/or method findFragmentByTag(). It depends on how and where you added your fragment.
更新2:
final Fragment homeFragment = (HomeFragment)getActivity().getFragmentManager().findFragmentById(R.id.containerView);
Intent in = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
homeFragment.startActivityForResult(in, RESULT_LOAD_IMAGE);
这篇关于Android:从对话框片段调用onActivityResult()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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