Android 自定義progressDialog實現
我們在項目中經常會遇到這樣一個應用場景:執行某個耗時操作時,為了安撫用戶等待的煩躁心情我們一般會使用進度條之類的空間,在android中讓大家最 容易想到的就是progressbar或者progressDialog,區別在于前者是一個控件,后者是對話框。由于一些需求在彈出進度條時不希望用戶 能夠操作其他控件,所以只能使用progressDialog,這個時候有遇到了一個問題,我不想要progressDialog的黑色框框,感覺這樣跟 應用的整體風格不協調,這個時候就考慮了寫一個自定義的progressDialog。
在網上搜過很多自定義progressDialog的例子,對著寫了下,但是沒有任何效果,不知道是自己使用的方法不對還是什么地方出錯了。通過不斷的查找資料,寫了一個簡單的自定義progressDialog。先上圖看下效果:
<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> </pre>2.customprogressdialog.xml文件,定義自己的布局,由于我的需求只需要一個進度條以及一串顯示的內容,所以布局比較接單 <pre class="brush:xml; toolbar: true; auto-links: false;"> <?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> </pre>3.progress_round.xml文件.這個文件為了實現轉動的效果,循環顯示這些圖片。 <pre class="brush:xml; toolbar: true; auto-links: false;"> <?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> </pre>4.CustomProgressDialog.java文件,這個是就是我們最終需要使用的progressDialog了。 <pre class="brush:java; toolbar: true; auto-links: false;">/**************************************************************************************
- [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 請在此處簡要描述此類所實現的功能。因為這項注釋主要是為了在IDE環境中生成tip幫助,務必簡明扼要
- [Remarks]
- TODO 請在此處詳細描述類的功能、調用方法、注意事項、以及與其它類的關系. ***/
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 標題
* @param strTitle
* @return
*
*/
public CustomProgressDialog setTitile(String strTitle){
return customProgressDialog;
}
/**
*
* [Summary]
* setMessage 提示內容
* @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;
}
}</pre>5.接下來就是寫一個測試activity調用我們的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("正在加載中..."); } 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(); } }
}</pre>這樣我們需要的progressDialog效果就出來了