CSDN Simple Android Client Development

has been on the computer to see CSDN blog, information, today made a small software on the phone to view information and blog.

Directly on the code:

First, the Welcome interface--Loadingactivity.java

Package Com.example.webviewtest;import Android.app.activity;import Android.content.intent;import android.os.Bundle ; Import Android.os.handler;import Android.view.window;public class Loadingactivity extends activity{@ overrideprotected void OnCreate (Bundle savedinstancestate) {//TODO auto-generated method Stubsuper.oncreate ( Savedinstancestate); requestwindowfeature (Window.feature_no_title); Setcontentview (R.layout.loading); new Handler ( ). postdelayed (New Runnable () {@Overridepublic void run () {Intent mainintent = new Intent (Loadingactivity.this, Showactivity.class); startactivity (mainintent); Finish ();}}, 2000);}}

The layout file is simple--loading.xml

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    android:layout_width=" match_parent "    android:layout_height=" match_parent "    android:o rientation= "vertical" >    <imageview        android:id= "@+id/imageview1" android:layout_width= "Wrap_        Content "        android:layout_height=" fill_parent "        android:src=" @drawable/splash "/></linearlayout>

second, the main page surface--showactivity.java

Package Com.example.webviewtest;import Java.util.timer;import Java.util.timertask;import Android.annotation.suppresslint;import Android.app.activity;import Android.app.alertdialog;import Android.content.dialoginterface;import Android.content.intent;import Android.os.bundle;import Android.view.keyevent;import Android.view.menu;import Android.view.menuitem;import Android.view.Window;import Android.webkit.websettings.renderpriority;import Android.webkit.webview;import android.webkit.WebViewClient; Import Android.widget.toast;public class Showactivity extends Activity {private WebView webview;private static Boolean is Exit = false; Timer texit = new timer ();//Timer timertask task; @SuppressLint ("setjavascriptenabled") @Overrideprotected void OnCreate ( Bundle savedinstancestate) {super.oncreate (savedinstancestate); Requestwindowfeature (Window.feature_no_title); Setcontentview (r.layout.activity_main); WebView = (WebView) Findviewbyid (R.id.web_view); Webview.getsettings (). Setbuiltinzoomcontrols (true); webView.getsettings (). Setjavascriptenabled (True); Webview.getsettings (). setrenderpriority (Renderpriority.high);// Webview.getsettings (). Setblocknetworkimage (True); Webview.setwebviewclient (new Webviewclient () {@Overridepublic Boolean shouldoverrideurlloading (WebView view, String URL) {//To load New Web page view.loadurl (URL) According to the parameters passed in;// Indicates that the current webview can handle a request to open a new webpage without using the System browser to return true; @Overridepublic void Onreceivederror (WebView view, int errorcode,string description, String failingurl) { Super.onreceivederror (view, ErrorCode, description, Failingurl); Toast.maketext (Showactivity.this, "Uh! Failed to load, may have broken the network, or could not access! ", Toast.length_long). Show ();}}); Webview.loadurl ("http://www.csdn.net/");} @Overridepublic boolean onKeyDown (int keycode, keyevent event) {if (keycode = = Keyevent.keycode_back && webview.c Angoback ()) {webview.goback ();//Return to the previous page return true;} Return Super.onkeydown (KeyCode, event);} @Overridepublic void onbackpressed () {if (Isexit = = False) {Isexit = true; Toast.maketext (This, "press the Back button again to return to the desktop", Toast.length_Short). Show (); task = new TimerTask () {@Overridepublic void run () {isexit = false;}}; Texit.schedule (Task, 2000);} else {finish (); System.exit (0);}} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {//TODO auto-generated method Stubsuper.oncreateoptionsmenu ( menu);//Add four menu items menu.add (menu.none, Menu.first + 1, 1, "help"). SetIcon (R.drawable.menu_help); Menu.add (Menu.none, Menu.first + 2, 2, "exit"). SetIcon (R.drawable.menu_quit); return true;} @Overridepublic boolean onoptionsitemselected (MenuItem Item) {//TODO auto-generated method Stubswitch (Item.getitemid ( ) {case Menu.first + 1:intent Intent = new Intent (showactivity.this, Helpactivity.class); startactivity (Intent); return True;case Menu.first + 2:new Alertdialog.builder (this). Settitle ("Exit"). Setmessage ("Are you sure you want to exit Csdn?"). "). SetIcon (Android. R.drawable.ic_dialog_info). Setpositivebutton (R.string.ok,new Dialoginterface.onclicklistener () {public void OnClick (dialoginterface dialog,int whichbutton) {finish ();//Exit Program}}). Setnegativebutton (r.string.canceL, NULL). Show (); return true;} return false;}}

Layout file--activity_main.xml

<linearlayout xmlns:android= "http://schemas.android.com/apk/res/android"    android:layout_width= "Match_ Parent "    android:layout_height=" match_parent ">    <webview        android:id=" @+id/web_view "        Android:layout_width= "Match_parent"        android:layout_height= "Match_parent"/></linearlayout>

third, help page--helpactivity.java

Package Com.example.webviewtest;import Android.app.activity;import Android.os.bundle;import Android.view.Window; public class Helpactivity extends activity{@Overrideprotected void OnCreate (Bundle savedinstancestate) {//TODO Auto-generated method Stubsuper.oncreate (savedinstancestate); Requestwindowfeature (Window.feature_no_title); Setcontentview (R.LAYOUT.HELP);}}

Layout file--help.xml

<?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:orientation=" vertical " > <linearlayout android:layout_width= "wrap_content" android:layout_height= "Wrap_content" and roid:orientation= "Horizontal" > <textview android:id= "@+id/imageview1" Android:layout_w Idth= "100DP" android:layout_height= "match_parent" android:layout_marginright= "10DP" Andro            id:text= "First step:" Android:textsize= "23sp"/> <textview android:id= "@+id/imageview1" Android:layout_width= "100DP" android:layout_height= "Match_parent" android:layout_marginright= "5        DP "android:layout_marginleft=" 5DP "android:text=" Step Two: "android:textsize=" 23sp "/> <textview Android: id= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "Match_parent" a ndroid:layout_marginright= "10DP" android:text= "Step Three:" android:textsize= "23sp"/> </linearlay        out> <linearlayout android:layout_width= "wrap_content" android:layout_height= "Wrap_content" android:orientation= "Horizontal" android:layout_margintop= "10DP" > <textview android:i D= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "Match_parent" and roid:layout_marginright= "10DP" android:text= "click on the top right corner icon" android:textsize= "15sp"/> <textv Iew android:id= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "MATC H_parent "android:layout_marginright=" 5DP "android:layout_marginleft=" 5DP "android:text=" Click on the Blog "Android: textsize= "15sp"/> <textview android:id= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "Match_parent" android:layout_marginright= "10DP" android:text= "click to login "Android:textsize=" 15sp "/> </LinearLayout> <linearlayout android:layout_width=" wrap            _content "android:layout_height=" wrap_content "android:orientation=" Horizontal "> <imageview Android:id= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "Match_pare            NT "android:layout_marginright=" 10DP "android:src=" @drawable/first "/> <imageview             Android:id= "@+id/imageview1" android:layout_width= "100DP" android:layout_height= "Match_parent" android:layout_marginleft= "5DP" android:layout_marginright= "5DP" android:src= "@drawable/ Second "/> < ImageView android:id= "@+id/imageview1" android:layout_width= "100DP" Android:layout_heigh t= "Match_parent" android:layout_marginleft= "10DP" android:src= "@drawable/third"/> </linear Layout></linearlayout>

Iv. Finally, don't forget to add access to the network in the Androidmanifest.xml file

<uses-permission android:name= "Android.permission.INTERNET"/>

CSDN Simple Android Client Development