Android控件之-Dialog

在android中经常也能用到dialog对话框

package com.ko8e;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;

/**
 * 一个是通过AlertDialog.Builder 初始化dialog 然后再showDialog.
 * 另一个是通过将androidManifest.xml中的activity的属性设为android
 * :theme="@android:style/Theme.Dialog，伪装为dialog
 */
public class MyActivity extends Activity {
	/** Called when the activity is first created. */
	ProgressDialog m_Dialog = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		Dialog dialog = new AlertDialog.Builder(MyActivity.this)
					.setTitle("登录提示")
					.setMessage("这里需要登录")
					.setPositiveButton("确定",
							new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog, int which) {
									LayoutInflater factory = LayoutInflater.from(MyActivity.this);
										final View DialogView = factory.inflate(R.layout.dialog, null);
										AlertDialog dlg = new AlertDialog.Builder(MyActivity.this)
											.setTitle("登录框").setView(DialogView).setPositiveButton("确定",
													new DialogInterface.OnClickListener() {
														public void onClick(DialogInterface dialog,int which) {
															m_Dialog = ProgressDialog.show(
																	MyActivity.this, "请等待···",
																	"正在为你登录···", true);
															new Thread() {
																public void run() {
																	try {
																		sleep(3000);
																	} catch (Exception e) {
																		e.printStackTrace();
																	} finally {
																		m_Dialog.dismiss();
																	}
																}
															}.start();
									}
								}).setNegativeButton("取消",
								new DialogInterface.OnClickListener() {
									public void onClick(DialogInterface dialog,
											int which) {
										MyActivity.this.finish();
									}
								}).create();
						dlg.show();
					}
				}).setNegativeButton("退出",
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						MyActivity.this.finish();
					}
				}).create();
		dialog.show();

	}
}

在这里使用到了两个xml来显示

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

dialog.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"
    >
<TextView  
	android:id="@+id/username"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="20dip"
	android:layout_marginRight="20dip"
	android:gravity="left"
	android:textAppearance="?android:attr/textAppearanceMedium"
    />
<EditText
	android:id="@+id/username"
	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"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="20dip"
	android:layout_marginRight="20dip"
	android:gravity="left"
	android:textAppearance="?android:attr/textAppearanceMedium"
    />
<EditText
	android:id="@+id/password"
	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"
	android:textAppearance="?android:attr/textAppearanceMedium"
	/>
</LinearLayout>