调用DialogFragment

Question

我已经成功地设置了Dialog片段类，现在我想从我设置的主片段类中调用它。

我试过使用多个代码来调用它，但是我不断地收到错误和崩溃。

我需要在我的onClick中添加什么来调用我的对话框片段？

提前感谢！

主要片段类别：

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    final View v = inflater.inflate(R.layout.image_detail_fragment,
            container, false);

    mImageView = (RecyclingImageView) v.findViewById(R.id.imageView);
    mImageView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {


            //Here


        }

    });

    return v;
}

对话片段：

class MyDialogFragment extends DialogFragment {
Context mContext;

public MyDialogFragment() {
    mContext = getActivity();
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
            mContext);
    alertDialogBuilder.setTitle("Set Wallpaper?");
    alertDialogBuilder.setMessage("Are you sure?");
    // null should be your on click listener
    alertDialogBuilder.setPositiveButton("OK", null);
    alertDialogBuilder.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });

    return alertDialogBuilder.create();
}

public static MyDialogFragment newInstance() {
    MyDialogFragment f = new MyDialogFragment();
    return f;
}

}

Answer 1

在这里，解决方案：

 @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    final View v = inflater.inflate(R.layout.image_detail_fragment,
            container, false);

    mImageView = (RecyclingImageView) v.findViewById(R.id.imageView);
    mImageView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
                MyDialogFragment dialog = MyDialogFragment.newInstance();
            dialog.show(getActivity().getFragmentManager(), "MyDialogFragment");
        }

    });

    return v;
}

Answer 2

尝试以下几点

FragmentTransaction ft = ((FragmentActivity)getActivity()).getSupportFragmentManager().beginTransaction();
MyDialogFragment dialog = MydialogFragment.newInstance();
dialog.show(ft, "Tag");

这里还有一个很棒的补习

Answer 3

在您的Dialog片段中，已经有了下面的内容，它返回对话框框架的实例。

public static MyDialogFragment newInstance() {
    MyDialogFragment f = new MyDialogFragment();
    return f;  
}

所以，试试下面的方法

DialogFragment newFragment = MyDialogFragment.newInstance();// call the static method
newFragment.show(getActivity().getFragmentManager(), "dialog");

看看这些文档，有一个例子

http://developer.android.com/reference/android/app/DialogFragment.html