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

main.xml

<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>

custom_dialog.xml

<?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;@Overrideprotected 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() {@Overridepublic 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() {@Overridepublic 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() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubCustomDialog dialog = new CustomDialog(MainActivity.this);dialog.show();}});}}

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