Android之普通对话框

main.xml布局文件

              <?        xml version        =        "        1.0        "         encoding        =        "        utf-8        "        ?>        
        <        LinearLayout xmlns:android        =        "        http://schemas.android.com/apk/res/android        "        
 android:orientation        =        "        vertical        "         android:layout_width        =        "        fill_parent        "        
 android:layout_height        =        "        fill_parent        "        >        
         <        EditText android:text        =        ""         
 android:id        =        "        @+id/editText        "        
 android:layout_width        =        "        fill_parent        "        
 android:layout_height        =        "        wrap_content        "         
 android:editable        =        "        false        "        
 android:cursorVisible        =        "        false        "                 />        
         <        Button android:text        =        "        显示普通对话框        "         
 android:id        =        "        @+id/button        "        
 android:layout_width        =        "        fill_parent        "        
 android:layout_height        =        "        wrap_content        "                 />        
        </        LinearLayout        >

AlertDialog类

              package         com.ljq.dialog;

        import         android.app.Activity;
        import         android.app.Dialog;
        import         android.app.AlertDialog.Builder;
        import         android.content.DialogInterface;
        import         android.content.DialogInterface.OnClickListener;
        import         android.os.Bundle;
        import         android.view.View;
        import         android.widget.Button;
        import         android.widget.EditText;

        public                 class         AlertDialog         extends         Activity {
         private         EditText editText;
         private                 final                 static                 int         DIALOG        =        1        ;

 @Override
         public                 void         onCreate(Bundle savedInstanceState) {
         super        .onCreate(savedInstanceState);
 setContentView(R.layout.main);

 editText        =        (EditText)findViewById(R.id.editText);
 Button button         =         (Button) findViewById(R.id.button);
 button.setOnClickListener(        new         View.OnClickListener() {
         public                 void         onClick(View v) {
         //         显示对话框        
         showDialog(DIALOG);
 }
 });
 }
 
         /**        
 * 创建普通对话框
         */        
 @Override
         protected         Dialog onCreateDialog(        int         id) {
 Dialog dialog        =        null        ;
         switch         (id) {
         case         DIALOG:
 Builder builder        =        new         android.app.AlertDialog.Builder(        this        );
         //        设置对话框的图标        
         builder.setIcon(R.drawable.header);
         //        设置对话框的标题        
         builder.setTitle(        "        普通对话框        "        );
         //        设置对话框的显示内容        
         builder.setMessage(        "        这是普通对话框中的内容！！        "        );
         //        添加按钮，android.content.DialogInterface.OnClickListener.OnClickListener        
         builder.setPositiveButton(        "         确 定         "        ,         new         OnClickListener(){
         public                 void         onClick(DialogInterface dialog,         int         which) {
 editText.setText(        "        这是普通对话框中的内容！！        "        );
 }
 });
         //        创建一个普通对话框        
         dialog        =        builder.create();
         break        ;
 }
         return         dialog;
 }
 
}

运行结果

Android之普通对话框

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