标签：alertdialog
效果：
实现步骤：
1.定义AlertDialog的布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="100dp"
android:background="@android:color/holo_green_dark" >
<ImageView
android:id="@+id/imageView_background_mydialog"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/ic_launcher" />
</RelativeLayout>
2.创建Activity，布局如下
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/myBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="show dialog"
android:textSize="22dip"
/>
</RelativeLayout>
MainActivity.java
package com.example.alertdialog;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
private Button btn = null;
private AlertDialog myDialog = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = (Button) findViewById(R.id.myBtn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
myDialog = new AlertDialog.Builder(MainActivity.this).create();
myDialog.show();
myDialog.getWindow().setContentView(R.layout.dialog);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
标签：alertdialog
原文地址：http://blog.csdn.net/u013425527/article/details/41280445
