2019独角兽企业重金招聘Python工程师标准>>> 
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><TextViewandroid:id="@+id/tv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/hello_world" /><Button android:id="@+id/button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="点我 "/>
</LinearLayout>MainActivity.java
package com.example.simplealertdialog;import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;public class MainActivity extends Activity {private Button button;private TextView tv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button = (Button) findViewById(R.id.button);tv = (TextView) findViewById(R.id.tv);final Builder builder = new AlertDialog.Builder(this);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {builder.setIcon(R.drawable.ic_launcher);builder.setTitle("title");builder.setMessage("no message");builder.setPositiveButton("yes",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {tv.setText("is yes");}});builder.setNegativeButton("no",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {tv.setText("is no");}});builder.create().show();}});}}
