Android自定义圆角对话框

自定义对话框MyDialog类继承Dialog类：

package com.example.jjy.myapplication;
import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
/**
 * Created by jjy on 16-5-15.
 */
public class MyDialog extends Dialog{
    private Button positiveButton, negativeButton;
    private TextView contenttv;

    public MyDialog(Context context) {
        super(context,R.style.mydialog);
        View view = LayoutInflater.from(getContext()).inflate(R.layout.mydialoglayout, null);  //通过LayoutInflater获取布局
        contenttv = (TextView) view.findViewById(R.id.title);
        positiveButton = (Button) view.findViewById(R.id.acceptbtn);
        negativeButton = (Button) view.findViewById(R.id.refusebtn);
        setContentView(view);  //设置view
    }
    //设置内容
    public void setContent(String content) {
        contenttv.setText(content);
    }
    //确定按钮监听
    public void setOnPositiveListener(View.OnClickListener listener){
        positiveButton.setOnClickListener(listener);
    }

    //否定按钮监听
    public void setOnNegativeListener(View.OnClickListener listener){
        negativeButton.setOnClickListener(listener);
    }
}

R.style.mydialog 对话框属性在 values/styles.xml中设置：

R.layout.mydialoglayout 布局文件：

其中对话框的圆角背景mydialogshape：

最后在Activity中调用：

package com.example.jjy.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button=(Button)findViewById(R.id.btn);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MyDialog myDialog=new MyDialog(MainActivity.this);
                myDialog.getWindow().setLayout(800,450); //对话框大小应根据屏幕大小调整
                myDialog.setContent("自定义对话框");
                myDialog.setOnPositiveListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Toast.makeText(MainActivity.this,"YES", Toast.LENGTH_SHORT).show();
                    }
                });
                myDialog.setOnNegativeListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Toast.makeText(MainActivity.this,"NO",Toast.LENGTH_SHORT).show();
                    }
                });
                myDialog.show();
            }
        });
    }
}

结果截图：