第一章:具有选择功能对话框

效果：









main.xml

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:id="@+id/widget0"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<Button
android:id="@+id/selcet"
android:layout_width="95px"
android:layout_height="wrap_content"
android:text="&#36873;&#25321;"
android:layout_x="123px"
android:layout_y="189px"
>
</Button>
</AbsoluteLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, AlertDialogTest!</string>
    <string name="alert_select_title">请选择内容</string>
    <string name="dialog_title">您选择的是:</string>
    <string name="ok">确定</string>
    <string name="cancel">取消</string>
    <array name="alert_select_array">
    	<item>串串香</item>
    	<item>烤肉</item>
    	<item>火锅</item>
    	<item>肯德基</item>
    </array>
    <string name="app_name">AlertDialogTest</string>
</resources>

package alert.dialog.test;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class AlertDialogTest extends Activity {
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /**载入main.xml */
        setContentView(R.layout.main);
        /**通过id找到button组件*/
        Button bt=(Button)findViewById(R.id.selcet);
        /**设置button按钮点击事件*/
        bt.setOnClickListener(new Button.OnClickListener(){
        	public void onClick(View  v){
        		/**设置对话框标题,内容点击事件*/
        		new AlertDialog.Builder(AlertDialogTest.this).setTitle(R.string.alert_select_title).setItems(R.array.alert_select_array,  new DialogInterface.OnClickListener() {
					@Override
					public void onClick(DialogInterface dialog, int which) {
						/**获得strings.xml name="dialog_title"内容*/
						CharSequence strDialog=getString(R.string.dialog_title);
						/**获得strings.xml name="alert_select_array"数组内容*/
						String[] str=getResources().getStringArray(R.array.alert_select_array);
						new AlertDialog.Builder(AlertDialogTest.this).setMessage(strDialog+ str[which]).setNegativeButton(R.string.ok, new DialogInterface.OnClickListener() {
							
							@Override
							public void onClick(DialogInterface dialog, int which) {
							}
						}).show();
					}
					/**为选择对话框设置取消按钮事件*/
				}).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface dialog, int which) {
						dialog.dismiss();
					}
				}).show();
        	}
        });
    }
}