自定义android ProgressDialog

Android系统自己提供的UI的都是比较难看的，开发中经常用到自定义对话框，下面分享个最近项目中使用的加载框。 

 

下面是源代码，主要的原理就是准备几个图片，然后循环播放。

MainActivity.java

package com.example.testandroidprogressdialog;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity implements OnClickListener {Button button1;Button button2;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button1 = (Button) findViewById(R.id.button1);button2 = (Button) findViewById(R.id.button2);button1.setOnClickListener(this);button2.setOnClickListener(this);}public void onClick(View v) {if (v == button1) {showDialog("正在加载请稍后");} else if (v == button2) {showDialog("");}}void showDialog(String msg) {MyProgressDialog myDialog = new MyProgressDialog(this);myDialog.setMsg(msg);myDialog.show();}}

MyProgressDialog.java

package com.example.testandroidprogressdialog;import android.app.Dialog;import android.content.Context;import android.content.DialogInterface;import android.content.DialogInterface.OnDismissListener;import android.content.DialogInterface.OnShowListener;import android.graphics.drawable.AnimationDrawable;import android.os.Bundle;import android.text.TextUtils;import android.view.View;import android.widget.ImageView;import android.widget.TextView;public class MyProgressDialog extends Dialog implements OnShowListener, OnDismissListener {Context context;ImageView imageview;TextView textView;String msg;public MyProgressDialog(Context context) {this(context, R.style.AppTheme_Dialog_NoTitleBar);}public MyProgressDialog(Context context, int theme) {super(context, theme);this.context = context;}protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);View view = View.inflate(context, R.layout.dialog_progress, null);setContentView(view);imageview = (ImageView) view.findViewById(R.id.iv_loading);textView = (TextView) view.findViewById(R.id.tv_msg);setOnShowListener(this);textView.setText(msg);textView.setVisibility(TextUtils.isEmpty(msg) ? View.GONE : View.VISIBLE);}public void onShow(DialogInterface dialog) {AnimationDrawable animationDrawable = (AnimationDrawable) imageview.getBackground();animationDrawable.start();}public void onDismiss(DialogInterface dialog) {AnimationDrawable animationDrawable = (AnimationDrawable) imageview.getBackground();animationDrawable.stop();}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}}

对话框的布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:background="@drawable/dialog_progress_bg"    android:gravity="center_vertical"    android:orientation="horizontal"    android:padding="10dp" >    <ImageView        android:id="@+id/iv_loading"        android:layout_width="60dp"        android:layout_height="60dp"        android:background="@anim/dialog_progress_anim_bg"        android:contentDescription="@string/app_name" />    <TextView        android:id="@+id/tv_msg"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:textColor="#fff"        android:textSize="16sp"        android:visibility="gone" /></LinearLayout>

还有比较重要的就是，对话框需要的样式。

    <style name="AppTheme.Dialog" parent="@android:style/Theme.Dialog">        <item name="android:windowFrame">@null</item>        <item name="android:windowIsFloating">true</item>        <item name="android:windowIsTranslucent">false</item>        <item name="android:windowNoTitle">true</item>        <item name="android:windowBackground">@android:color/transparent</item>        <item name="android:backgroundDimEnabled">false</item>    </style>    <style name="AppTheme.Dialog.NoTitleBar">        <item name="android:windowNoTitle">true</item>        <item name="android:background">@drawable/dialog_frame_bg</item>        <item name="android:windowBackground">@android:color/transparent</item>        <item name="android:colorBackgroundCacheHint">@null</item>        <item name="android:windowIsTranslucent">true</item>    </style>

动画文件

<?xml version="1.0" encoding="utf-8"?><animation-listxmlns:android="http://schemas.android.com/apk/res/android"  android:oneshot="false">    <item android:drawable="@drawable/progress_1" android:duration="200"/>    <item android:drawable="@drawable/progress_2" android:duration="200"/>    <item android:drawable="@drawable/progress_3" android:duration="200"/>    <item android:drawable="@drawable/progress_4" android:duration="200"/>    <item android:drawable="@drawable/progress_5" android:duration="200"/>    <item android:drawable="@drawable/progress_6" android:duration="200"/>    <item android:drawable="@drawable/progress_7" android:duration="200"/>    <item android:drawable="@drawable/progress_8" android:duration="60"/></animation-list>

原理和实现都是比较简单。主要是自定义一个view，可以播放对动画的图片，也就是一个帧动画。然后重装定义对话框的样式，不让系统的样式和样式出现，最后在显示的时候，播放动画。

下面是下载文件地址http://download.csdn.net/detail/xia215266092/6926849