自定义android ProgressDialog

来自： http://blog.csdn.net//guijiaoba/article/details/19288461

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-list   xmlns: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