如何创建自定义材料对话框

Question

我想知道如何为我的应用程序创建自定义材质对话框.具体来说,我需要实现这样的目标

材料对话框

我一直在遵循这样的方法:

final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom);
dialog.setTitle("Sample");
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
            // if button is clicked, close the custom dialog
            dialogButton.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    dialog.dismiss();
                }
            });

但是,在点击时我得到了空指针异常button.任何教程对我来说都是一个很好的帮助.

Answer 1

写一个扩展到的新类DialogFragment.

public class CustomDialog extends DialogFragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.layout_dialog,container,false);
        getDialog().setTitle("Sample");
        Button doneBtn = (Button) mView.findViewById(R.id.done_convert);
        doneBtn.setOnClickListener(doneAction);
        return view;
    }

    View.OnClickListener doneAction = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(getActivity(),"Test",Toast.LENGTH_LONG).show();
        }
    };

}

然后从您的活动中调用它

FragmentManager fm = getSupportFragmentManager();
CustomDialog custom = new CustomDialog();
custom.show(fm,"");

希望,它会奏效.