MyDialogDemo.java:
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MyDialogDemo extends Activity {
private Button mybut = null ; // 定义按钮
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.main); // 调用布局管理器
this.mybut = (Button) super.findViewById(R.id.mybut) ; // 取得按钮
this.mybut.setOnClickListener(new OnClickListenerImpl()) ; // 设置事件类
}
private class OnClickListenerImpl implements OnClickListener {
@Override
public void onClick(View view) {
final ProgressDialog proDia = ProgressDialog.show(MyDialogDemo.this,
"搜索网络", "请耐心等待...");
new Thread(){
public void run(){ // 线程的主体类
try {
Thread.sleep(3000) ; // 运行三秒
} catch (Exception e) {
} finally {
proDia.dismiss() ; // 关闭对话框
}
}
}.start() ;
proDia.show() ; // 显示对话框
}
}
main.xml:
<?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">
<Button
android:id="@+id/mybut"
android:text="查找网络"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
