Android launches another main screen hide icon app from one app

Start b.apk with a.apk, and B's icon is not visible on the phone's main screen.

First, a new A, B two Android project (new HelloWorld project similar), in a project to increase the Click event (Launch button to launch the B app).

Second, in the B application To modify the B manifest. xml <intent-filter>...</intent-filter> content can hide the B app icon.

<?XML version= "1.0" encoding= "Utf-8"?><Manifestxmlns:android= "Http://schemas.android.com/apk/res/android" Package= "Com.rainwii.message"Android:versioncode= "1"Android:versionname= "1.0" >    <USES-SDKandroid:minsdkversion= "8"android:targetsdkversion= "+" />    <ApplicationAndroid:allowbackup= "true"Android:icon= "@drawable/ic_launcher"Android:label= "@string/app_name"Android:theme= "@style/apptheme" >        <ActivityAndroid:name= "Com.rainwii.message.MainActivity"Android:label= "@string/app_name" >            <Intent-filter>                <ActionAndroid:name= "Android.intent.action.MAIN" />                <!--This sentence can be commented out, can also be kept -               <!--<category android:name= "Android.intent.category.LAUNCHER"/> -               <!--data is critical; The Android:scheme code can be commented. If you want to write the content to write casually, but and want to and a application in the jump information consistent -                <DataAndroid:host= "Mainactivity"Android:scheme= "ABC"                       />            </Intent-filter>        </Activity>          </Application></Manifest>

The icon to install the B app is now invisible on the phone.

Third,a button in the application to add code to start the B application.

 PackageCom.rainwii.main;ImportAndroid.net.Uri;ImportAndroid.os.Bundle;Importandroid.app.Activity;ImportAndroid.content.ComponentName;Importandroid.content.Intent;ImportAndroid.content.pm.PackageManager;ImportAndroid.view.Menu;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.widget.Button;ImportAndroid.widget.Toast; Public classMainactivityextendsActivity {Button Startappbutton; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); Startappbutton=(Button) Findviewbyid (R.id.button1); Startappbutton.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View v) {//TODO auto-generated Method Stub               Intent Intent = new Intent ();                ComponentName cn = New ComponentName ("Com.rainwii.message", "com.rainwii.message.MainActivity");                Intent.setcomponent (CN); Uri uri = uri.parse ("abc");//This should be consistent with the label in data in the B program Intent.setdata (URI);            StartActivity (intent);                        }        }); } @Override Public BooleanOncreateoptionsmenu (Menu menu) {//inflate the menu; This adds items to the action bar if it is present.getmenuinflater (). Inflate (R.menu.main, menu); return true; }    }

Note: componentname (component name) is used to open activity or services in other applications.

Usage:

Intent it=New  Intent (); It.setcomponent (new  componentname (String packagename,string Activityname)); StartActivity (it) ;

Well, you've implemented an app that launches another main screen hide icon from one app.

Android launches another main screen hide icon app from one app