AlertDialog 确认提示框

效果图

代码

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button btn= (Button) findViewById(R.id.button);
        btn.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                new AlertDialog.Builder(MainActivity.this)
                        .setTitle(" ")                                                   //设置对话框标题
                        .setMessage("确定删除此数据？")                                    //设置显示的内容
                        .setPositiveButton("确定",new DialogInterface.OnClickListener() { //添加确定按钮
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Toast.makeText(MainActivity.this,"删除成功！",Toast.LENGTH_LONG).show();
                                //finish();//关闭应用
                            }
                        }).setNegativeButton("返回",new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Toast.makeText(MainActivity.this,"返回成功！",Toast.LENGTH_LONG).show();
                            }
                }).show();
            }
        });

    }
}