Android:Handler实现ProgressDialog动画加载

CustomProgressDialog // 主要实现

/****@authoralexwan**/publicclassCustomProgressDialogextendsProgressDialog{privatestaticImageViewmImageView;//加载时显示的消息privateStringmLoadMsg;//privateTextViewmLoadingTv;//图片数组idprivatestaticint[]mIds;//当前图片indexprivatestaticintindex=0;privateCustomProgressDialog(Contextcontext,Stringcontent,int[]ids){super(context);this.mLoadMsg=content;CustomProgressDialog.mIds=ids;setCanceledOnTouchOutside(true);}/***获取CustomProgressDialog实例*@paramcontext上下文*@paramcontent加载显示的消息*@paramids图片数组*@return*/publicstaticCustomProgressDialoggetInstance(Contextcontext,Stringcontent,int[]ids){returnnewCustomProgressDialog(context,content,ids);}@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.progress_dialog);mLoadingTv=(TextView)findViewById(R.id.loadingTv);mLoadingTv.setText(mLoadMsg);mImageView=(ImageView)findViewById(R.id.loadingIv);initData();}privatevoidinitData(){try{//mImageView.setBackgroundResource(mIds[index]);}catch(Exceptione){e.printStackTrace();}}@Overridepublicvoidshow(){super.show();if(mIds.length>0){handler.sendEmptyMessage(1);}}@Overridepublicvoiddismiss(){super.dismiss();handler.sendEmptyMessage(2);}privatefinalstaticHandlerhandler=newHandler(){@OverridepublicvoidhandleMessage(Messagemsg){intwhat=msg.what;switch(what){case1:index++;if(index>=mIds.length){//图片的索引置为0index=0;}try{mImageView.setBackgroundResource(mIds[index]);}catch(Exceptione){e.printStackTrace();}handler.sendEmptyMessageDelayed(1,50);break;case2://移除加载下个动画的handlerhandler.removeMessages(1);index=0;break;default:break;}super.handleMessage(msg);}};}

Xml布局文件

<?xmlversion="1.0"encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:orientation="vertical"><ImageViewandroid:id="@+id/loadingIv"android:layout_width="wrap_content"android:layout_height="wrap_content"/><TextViewandroid:id="@+id/loadingTv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignBottom="@+id/loadingIv"android:layout_centerHorizontal="true"android:textSize="20sp"android:text="努力加载中.."/></RelativeLayout>

应用

mProgressDialog=CustomProgressDialog.getInstance(this,"正在加载中",newint[]{R.drawable.cat_0001,R.drawable.cat_0002,R.drawable.cat_0003,R.drawable.cat_0004,R.drawable.cat_0005,R.drawable.cat_0006,R.drawable.cat_0007,R.drawable.cat_0008,R.drawable.cat_0009,R.drawable.cat_0010,R.drawable.cat_0011,R.drawable.cat_0012,R.drawable.cat_0013,R.drawable.cat_0014,R.drawable.cat_0015,R.drawable.cat_0016,R.drawable.cat_0017,R.drawable.cat_0018,R.drawable.cat_0019,R.drawable.cat_0020,R.drawable.cat_0021,R.drawable.cat_0022,R.drawable.cat_0023,});

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