Android Latency Processing Task Example

Today to do a task, request the picture to do button switch, click the departure corresponding event. Click Open, the left side of the picture shows a few lines of fonts, these lines of fonts are time-lapse display. The main code is attached below. Here are the Main.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "android:orientation=" horizontal "android:layout_width=" Fill_parent "android:layout_height=" Fill_pa Rent "android:layout_weight=" 6 "> <linearlayout android:orientation=" vertical "android:layout_width = "80DP" android:layout_height= "fill_parent" android:gravity= "center" android:layout_weight= "2.5" > & Lt TextView android:id= "@+id/txtview01" android:layout_width= "Wrap_content" android:layout_height = "Wrap_content" android:text= "" android:textcolor= "#ff00" android:textsize= "20sp"/> &lt ; TextView android:id= "@+id/txtview02" android:layout_width= "Wrap_content" android:layout_height             = "Wrap_content" android:text= "" android:textcolor= "#999933" android:textsize= "20sp"/> <textview Android:id= "@+id/txtvIew03 "android:layout_width=" wrap_content "android:layout_height=" wrap_content "android:text=" "Android            Oid:textcolor= "#ff33cc" android:textsize= "20sp"/> <textview android:id= "@+id/txtview04" Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:text= "" Android:textColor = "#993399" android:textsize= "20sp"/> </LinearLayout> <imageview android:id= "@+id/s     Tart "android:layout_width=" wrap_content "android:layout_height=" wrap_content "android:src=" @drawable/blue " android:layout_gravity= "Center" android:layout_weight= "1"/> <linearlayout android:orientation = "vertical" android:layout_width= "80DP" android:layout_height= "fill_parent" android:gravity= "center" Andro id:layout_weight= "2.5" > <textview android:id= "@+id/txtview05" android:layout_width= "WR Ap_content "Android: layout_height= "wrap_content" android:text= "android:textcolor=" #ff6666 "android:textsize=" 20SP "      /> <textview android:id= "@+id/txtview06" android:layout_width= "80DP"            android:layout_height= "Wrap_content" android:text= "android:textcolor=" #003366 "android:textsize=" 20SP "   /> </LinearLayout> </LinearLayout>

The following code is used to delay processing

New Handler (). postdelayed (New Runnable () {public        void run () {        //execute the task        }     

Java code Mainactivity.java such as the following:

Package Com.example.vieweffect;import Android.app.activity;import Android.app.actionbar;import Android.app.fragment;import Android.graphics.bitmap;import Android.graphics.bitmapfactory;import Android.os.bundle;import Android.os.handler;import Android.view.layoutinflater;import Android.view.Menu;import Android.view.menuitem;import Android.view.view;import Android.view.view.onclicklistener;import Android.view.viewgroup;import Android.widget.imagebutton;import Android.widget.imageview;import Android.widget.textview;import Android.os.build;public class Mainactivity extends Activity {TextView txtview01; TextView txtview02; TextView txtview03; TextView txtview04; TextView Txtview05; TextView txtview06;private ImageView Start =null;protected Boolean isbrewing = false; button replacement @overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.main); txtview01= (TextView) Findviewbyid (r.id.txtview01); txtview02= (TextView) Findviewbyid (r.id.txtview02); txtview03= (TextView) Findviewbyid (r.id.txtview03); txtview04= (TextView) Findviewbyid (r.id.txtview04); txtview05= (TextView) Findviewbyid (r.id.txtview05), txtview06= (TextView) Findviewbyid (r.id.txtview06); start= (ImageView) Findviewbyid (R.id.start); Start.setonclicklistener ((New Onclicklistener () {@Overridepublic void OnClick (View v) {//              TODO auto-generated Method Stubif (V==start) {if (isbrewing) Stopview ();                        else Startview (); } }}));}             Start public void Startview () {Bitmap Bmp=bitmapfactory.decoderesource (getresources (), r.drawable.stop);//Open resource picture           Start.setimagebitmap (BMP);        Txtview01.settext ("Open serial port ..."); New Handler (). postdelayed (New Runnable () {public void run () {//execute the task tx            Tview02.settext ("Open a ...");                 }}, 500); New Handler (). postdelayed (New Runnable () {public void run () {//exeCute the Task Txtview03.settext ("Open B ...");                 }}, 1000); New Handler (). postdelayed (New Runnable () {public void run () {//execute the task tx            Tview04.settext ("Open C ...");                 }}, 1500);  Isbrewing = true;             }//Stop public void Stopview () {Bitmap Bmp=bitmapfactory.decoderesource (getresources (), r.drawable.blue);//Open resource picture           Start.setimagebitmap (BMP);        Txtview01.settext ("");        Txtview02.settext ("");        Txtview03.settext ("");                Txtview04.settext ("");        Txtview05.settext ("");        Txtview06.settext ("");  Isbrewing = false; }  }

For example: The following interface appears after execution

, after clicking on the blue picture,

Android Latency Processing Task Example