Android 自定义progressDialog实现

fmms 12年前

         我们在项目中经常会遇到这样一个应用场景:执行某个耗时操作时,为了安抚用户等待的烦躁心情我们一般会使用进度条之类的空间,在android中让大家最 容易想到的就是progressbar或者progressDialog,区别在于前者是一个控件,后者是对话框。由于一些需求在弹出进度条时不希望用户 能够操作其他控件,所以只能使用progressDialog,这个时候有遇到了一个问题,我不想要progressDialog的黑色框框,感觉这样跟 应用的整体风格不协调,这个时候就考虑了写一个自定义的progressDialog。
         在网上搜过很多自定义progressDialog的例子,对着写了下,但是没有任何效果,不知道是自己使用的方法不对还是什么地方出错了。通过不断的查找资料,写了一个简单的自定义progressDialog。先上图看下效果:

Android 自定义progressDialog实现

1.String.xml 文件,progressDialog是继承与Dialog,先设置一下progressDialog的风格,设置背景透明色。
    <style name="CustomDialog" parent="@android:style/Theme.Dialog">            <item name="android:windowFrame">@null</item>                <item name="android:windowIsFloating">true</item>                <item name="android:windowContentOverlay">@null</item>                <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>                <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>            </style>                        <style name="CustomProgressDialog" parent="@style/CustomDialog">                <item name="android:windowBackground">@android:color/transparent</item>                <item name="android:windowNoTitle">true</item>            </style>  
2.customprogressdialog.xml文件,定义自己的布局,由于我的需求只需要一个进度条以及一串显示的内容,所以布局比较接单
    <?xml version="1.0" encoding="utf-8"?>        <LinearLayout          xmlns:android="http://schemas.android.com/apk/res/android"          android:layout_width="fill_parent"          android:layout_height="fill_parent"          android:orientation="horizontal">            <ImageView                android:id="@+id/loadingImageView"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:background="@anim/progress_round"/>            <TextView                android:id="@+id/id_tv_loadingmsg"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:textSize="20dp"/>        </LinearLayout>  
3.progress_round.xml文件.这个文件为了实现转动的效果,循环显示这些图片。
    <?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="200"/>        </animation-list>  
4.CustomProgressDialog.java文件,这个是就是我们最终需要使用的progressDialog了。
/**************************************************************************************  * [Project]  *       MyProgressDialog  * [Package]  *       com.lxd.widgets  * [FileName]  *       CustomProgressDialog.java  * [Copyright]  *       Copyright 2012 LXD All Rights Reserved.  * [History]  *       Version          Date              Author                        Record  *--------------------------------------------------------------------------------------  *       1.0.0           2012-4-27         lxd (rohsuton@gmail.com)        Create  **************************************************************************************/     package com.lxd.widgets;      import com.lxd.activity.R;    import android.app.Dialog;  import android.content.Context;  import android.graphics.drawable.AnimationDrawable;  import android.view.Gravity;  import android.widget.ImageView;  import android.widget.TextView;      /********************************************************************   * [Summary]   *       TODO 请在此处简要描述此类所实现的功能。因为这项注释主要是为了在IDE环境中生成tip帮助,务必简明扼要   * [Remarks]   *       TODO 请在此处详细描述类的功能、调用方法、注意事项、以及与其它类的关系.   *******************************************************************/    public class CustomProgressDialog extends Dialog {   private Context context = null;   private static CustomProgressDialog customProgressDialog = null;      public CustomProgressDialog(Context context){    super(context);    this.context = context;   }      public CustomProgressDialog(Context context, int theme) {          super(context, theme);      }      public static CustomProgressDialog createDialog(Context context){    customProgressDialog = new CustomProgressDialog(context,R.style.CustomProgressDialog);    customProgressDialog.setContentView(R.layout.customprogressdialog);    customProgressDialog.getWindow().getAttributes().gravity = Gravity.CENTER;        return customProgressDialog;   }         public void onWindowFocusChanged(boolean hasFocus){              if (customProgressDialog == null){        return;       }                 ImageView imageView = (ImageView) customProgressDialog.findViewById(R.id.loadingImageView);          AnimationDrawable animationDrawable = (AnimationDrawable) imageView.getBackground();          animationDrawable.start();      }         /**       *        * [Summary]       *       setTitile 标题       * @param strTitle       * @return       *       */      public CustomProgressDialog setTitile(String strTitle){       return customProgressDialog;      }            /**       *        * [Summary]       *       setMessage 提示内容       * @param strMessage       * @return       *       */      public CustomProgressDialog setMessage(String strMessage){       TextView tvMsg = (TextView)customProgressDialog.findViewById(R.id.id_tv_loadingmsg);              if (tvMsg != null){        tvMsg.setText(strMessage);       }              return customProgressDialog;      }  }
5.接下来就是写一个测试activity调用我们的progressDialog了。
package com.lxd.activity;    import com.lxd.widgets.CustomProgressDialog;    import android.app.Activity;  import android.os.AsyncTask;  import android.os.Bundle;  import android.view.Window;  import android.view.WindowManager;    public class MainFrame extends Activity {   private MainFrameTask mMainFrameTask = null;   private CustomProgressDialog progressDialog = null;         @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          this.requestWindowFeature(Window.FEATURE_NO_TITLE);          this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,          WindowManager.LayoutParams.FLAG_FULLSCREEN);                    setContentView(R.layout.main);                    mMainFrameTask = new MainFrameTask(this);          mMainFrameTask.execute();      }         @Override   protected void onDestroy() {    stopProgressDialog();        if (mMainFrameTask != null && !mMainFrameTask.isCancelled()){     mMainFrameTask.cancel(true);    }        super.onDestroy();   }     private void startProgressDialog(){    if (progressDialog == null){     progressDialog = CustomProgressDialog.createDialog(this);        progressDialog.setMessage("正在加载中...");    }           progressDialog.show();   }      private void stopProgressDialog(){    if (progressDialog != null){     progressDialog.dismiss();     progressDialog = null;    }   }      public class MainFrameTask extends AsyncTask<Integer, String, Integer>{    private MainFrame mainFrame = null;        public MainFrameTask(MainFrame mainFrame){     this.mainFrame = mainFrame;    }        @Override    protected void onCancelled() {     stopProgressDialog();     super.onCancelled();    }      @Override    protected Integer doInBackground(Integer... params) {          try {      Thread.sleep(10 * 1000);     } catch (InterruptedException e) {      e.printStackTrace();     }     return null;    }         @Override    protected void onPreExecute() {     startProgressDialog();    }      @Override    protected void onPostExecute(Integer result) {     stopProgressDialog();    }                }  }
这样我们需要的progressDialog效果就出来了