Java 来自适配器内部片段的startActivityForResult

我有一个片段，我在里面填了一个回收视图，一个帖子里有一个摄像头，我需要在拍照时记录下它带来的信息。我不知道怎么做

请帮忙

这是mi代码：

PostAdapter.java

        public HeaderViewHolder (View itemView) {
        super (itemView);
        this.mCamera = (ImageView) itemView.findViewById(R.id.ivCamera);
        mCameraPhoto = new CameraPhoto(itemView.getContext());
        this.mCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    ((Activity) v.getContext()).startActivityForResult(mCameraPhoto.takePhotoIntent(), CAMERA_REQUEST_ASIST);
                }catch (Exception e){
                    Log.e("Error camera permission", e.getMessage());
                }
            }
        });
    }

    @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    String photoPath = mCameraPhoto.getPhotoPath();
    for (Fragment fragment : getSupportFragmentManager().getFragments()) {
        fragment.onActivityResult(requestCode, resultCode, data);

        Log.d("Result in fragment",":D --> "+photoPath);
    }

}

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d("Result in fragment",":D");
}

MainActivity.java

        public HeaderViewHolder (View itemView) {
        super (itemView);
        this.mCamera = (ImageView) itemView.findViewById(R.id.ivCamera);
        mCameraPhoto = new CameraPhoto(itemView.getContext());
        this.mCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    ((Activity) v.getContext()).startActivityForResult(mCameraPhoto.takePhotoIntent(), CAMERA_REQUEST_ASIST);
                }catch (Exception e){
                    Log.e("Error camera permission", e.getMessage());
                }
            }
        });
    }

    @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    String photoPath = mCameraPhoto.getPhotoPath();
    for (Fragment fragment : getSupportFragmentManager().getFragments()) {
        fragment.onActivityResult(requestCode, resultCode, data);

        Log.d("Result in fragment",":D --> "+photoPath);
    }

}

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d("Result in fragment",":D");
}

MyFragment.java

        public HeaderViewHolder (View itemView) {
        super (itemView);
        this.mCamera = (ImageView) itemView.findViewById(R.id.ivCamera);
        mCameraPhoto = new CameraPhoto(itemView.getContext());
        this.mCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    ((Activity) v.getContext()).startActivityForResult(mCameraPhoto.takePhotoIntent(), CAMERA_REQUEST_ASIST);
                }catch (Exception e){
                    Log.e("Error camera permission", e.getMessage());
                }
            }
        });
    }

    @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    String photoPath = mCameraPhoto.getPhotoPath();
    for (Fragment fragment : getSupportFragmentManager().getFragments()) {
        fragment.onActivityResult(requestCode, resultCode, data);

        Log.d("Result in fragment",":D --> "+photoPath);
    }

}

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d("Result in fragment",":D");
}

---

使用getFragmentById（）或getFragmentByTag（）方法之一获取对片段的引用

将片段传递到PostAdapter的构造函数中

class PostAdapter {
   private Fragment fragment;

   public PostAdapter(Fragment fragment) {
      this.fragment = fragment;
   }
}

然后在里面点击

this.mCamera.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            try{
                fragment.startActivityForResult(mCameraPhoto.takePhotoIntent(), CAMERA_REQUEST_ASIST);
            }catch (Exception e){
                Log.e("Error camera permission", e.getMessage());
            }
        }
    });

---

您可以通过以下方式获得您拍摄的照片的信息

在你的片段中

 public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(resultCode == RESULT_OK){
            if(requestCode == CAMERA_REQUEST_ASIST ){
                String photoPath = mCameraPhoto.getPhotoPath();
                try {
                    // Update data in your Custom RecyclerView Adapter 
                    // and call notifyDatasetChanged

                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }
        }//end if resultCode
    }

---

更多信息

片段id放在哪里？当您创建一个片段时，您可以这样做===>事务。替换（R.id.content，fragmetTAg）；commit（）；然后，您可以使用getFragmentByTag（）获取片段的实例。您还需要从活动中删除

onActivityResult

覆盖。

FragmentActivity

类（或

AppCompatActivity

如果使用v7）已为您处理此问题。我试图将片段传递给适配器，但显示错误。！：（，“final Fragment homeGcFragment_=new Fragment（）；”--“mrecycergcpost.setAdapter（new PostHeaderAdapter（getActivity（）.getApplicationContext（），data，homeGcFragment_））；”在Fragment类中，您是否调用了PostAdapter=new PostAdapter（this）；mrecycergcpost.setAdapter（new PostHeaderAdapter（getActivity（）.getApplicationContext（），data，this））；以下错误“Fragment HomeGcFragment_u{56503bd}未附加到活动”您好！此代码在“Bundle extras=data.getExtras”中引发了一个异常，一个错误，对象为nullShow此方法体，mCameraPhoto.takePhotoIntent（）请。是一个库，而不是有体！是否使用此库？是的，完全正确。PhotoUtil！