Android:从对话框片段调用onActivityResult()

本文介绍了Android:从对话框片段调用onActivityResult()的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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); bitmappress(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);