Dialog的应用

package com.my;

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

public class ShowDialogActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button mybutton=(Button) findViewById(R.id.button1);
mybutton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
LayoutInflater usingdialoglayoutxml=LayoutInflater.from(ShowDialogActivity.this);
final View myviewondialog=usingdialoglayoutxml.inflate(R.layout.dialogshow, null);
AlertDialog mydialoginstance=new AlertDialog.Builder(ShowDialogActivity.this).setMessage("Hello welcome!").setIcon(R.drawable.ic_launcher)
.setTitle("用户登录界面").setView(myviewondialog).setPositiveButton("确定",new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface didalog, int which) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "感谢您输入了信息",Toast.LENGTH_LONG).show();
}}).setNegativeButton("结束", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
ShowDialogActivity.this.finish();
}}).create();
mydialoginstance.show();
}
});
}
}

 

dialog.xml的设计：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
android:id="@+id/username_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:text="@string/username"
android:gravity="left"/>
<EditText
android:id="@+id/username_edit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:scrollHorizontally="true"
android:autoText="false"
android:capitalize="none"
android:gravity="fill_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"/>

<TextView
android:id="@+id/password_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:text="@string/password"
android:gravity="left"/>
<EditText
android:id="@+id/password_edit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:scrollHorizontally="true"
android:autoText="false"
android:capitalize="none"
android:gravity="fill_horizontal"
android:password="true"/>
</LinearLayout>

main.xml的设计：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/login" />

</LinearLayout>

 

运行结果：