Android对话框(二)进度条对话框ProgressDialog和自定义对话框CustomDialog

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.progressdialog.MainActivity" >

<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="显示进度对话框一" />

<Button
android:id="@+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/button1"
android:text="显示进度对话框二" />

<Button
android:id="@+id/button3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/button2"
android:text="自定义对话框的使用" />

</RelativeLayout>

<?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" >

<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />

</LinearLayout>

package com.example.progressdialog;

import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomDialog {

private Context context;
Dialog dialog;
public CustomDialog(Context context){
this.context = context;
dialog = new Dialog(context);
}
public void show(){
View view = LayoutInflater.from(context).inflate(R.layout.custom_dialog, null);
//inflate的第二个参数为null表示当前对话框的布局没根布局
dialog.setContentView(view);
/*
* setContentView(R.layout.custom_dialog);
* 也可以以这种方式加载
*/
dialog.setTitle("自定义的对话框");
ImageView imageView = (ImageView) view.findViewById(R.id.imageView1);
imageView.setImageResource(R.drawable.ic_launcher);
TextView textView = (TextView) view.findViewById(R.id.textView1);
textView.setText("这是自定义对话框");
dialog.show();
}
}

package com.example.progressdialog;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

private Button button1;
private Button button2;
private Button button3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button3 = (Button) findViewById(R.id.button3);
button1.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
/*
* ProgressDialog.show(MainActivity.this, "提示", "正在加载，请稍后...");
* 这样点击回退按钮没反应
*/
ProgressDialog dialog = new ProgressDialog(MainActivity.this);
dialog.setTitle("提示");
dialog.setMessage("正在加载，请稍后...");
dialog.show();//显示进度条，这样写点击回退按钮可退出进度对话框
}
});
button2.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
/*
* 第一个参数：上下文
* 第二个参数：主题样式 int theme
* 第一种写法
* ProgressDialog dialog = new ProgressDialog(MainActivity.this, ProgressDialog.STYLE_HORIZONTAL);
*/
ProgressDialog dialog = new ProgressDialog(MainActivity.this);
dialog.setTitle("下载提示");
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
dialog.setProgress(50);//要显示进度，加线程
//dialog.setCancelable(false);
dialog.show();
}
});
button3.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
CustomDialog dialog = new CustomDialog(MainActivity.this);
dialog.show();
}
});
}
}