Android Activity Global Data sharing

1 Package Com.example.metrox.l13;2 3 import android.app.Application;4 5 /**6 * Created by Metrox on 2016/6/13.7  */8  Public classApp extends Application {9     PrivateString textDate ="Default";Ten  One      PublicString gettextdate () { A         returntextDate; -     } -  the      Public voidsettextdate (String textDate) { -          This. textDate =textDate; -     } -}

1 Package Com.example.metrox.l13;2 3 import android.support.v7.app.AppCompatActivity;4 import Android.os.Bundle;5 import Android.view.View;6 import Android.widget.EditText;7 import Android.widget.TextView;8 9  Public classMainactivity extends Appcompatactivity {Ten  One TextView TV; A EditText et; - @Override -     protected voidonCreate (Bundle savedinstancestate) { the super.oncreate (savedinstancestate); - Setcontentview (r.layout.main1); -TV =(TextView) Findviewbyid (R.id.textview); -ET =(EditText) Findviewbyid (r.id.edittext); +Tv.settext ("Sharedata:"+( App) Getapplicationcontext ()). Gettextdate ( )); -Findviewbyid (R.id.btnsave). Setonclicklistener (NewView.onclicklistener () { + @Override A              Public voidOnClick (view view) { at (APP) Getapplicationcontext (). Settextdate (Et.gettext (). toString ()); -Tv.settext ("Sharedata:"+Et.gettext (). toString ()); -             } -         }); -     } -}

1 Package Com.example.metrox.l13;2 3 import android.app.Activity;4 import Android.os.Bundle;5 import Android.view.View;6 import Android.widget.EditText;7 import Android.widget.TextView;8 9 /**Ten * Created by Metrox on 2016/6/13. One  */ A  Public classMain2 extends Activity { - TextView TV; - EditText et; the @Override -     protected voidonCreate (Bundle savedinstancestate) { - super.oncreate (savedinstancestate); - Setcontentview (r.layout.main2); +TV =(TextView) Findviewbyid (R.id.textview); -ET =(EditText) Findviewbyid (r.id.edittext); +Tv.settext ("Sharedata:"+( App) Getapplicationcontext ()). Gettextdate ( )); AFindviewbyid (R.id.btnsave). Setonclicklistener (NewView.onclicklistener () { at @Override -              Public voidOnClick (view view) { - (APP) Getapplicationcontext (). Settextdate (Et.gettext (). toString ()); -Tv.settext ("Sharedata:"+Et.gettext (). toString ()); -             } -         }); in     } -}

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <Manifestxmlns:android= "Http://schemas.android.com/apk/res/android"3  Package= "Com.example.metrox.l13">4 5     <Application6         Android:name=". App "7 Android:allowbackup= "true"8 Android:icon= "@mipmap/ic_launcher"9 Android:label= "@string/app_name"Ten Android:supportsrtl= "true" One Android:theme= "@style/apptheme"> A         <ActivityAndroid:name=". Mainactivity "Android:label= "Main1"> -             <Intent-filter> -                 <ActionAndroid:name= "Android.intent.action.MAIN" /> the  -                 <categoryAndroid:name= "Android.intent.category.LAUNCHER" /> -             </Intent-filter> -         </Activity> +         <ActivityAndroid:name=". Main2 "Android:label= "Main2"> -             <Intent-filter> +                 <categoryAndroid:name= "Android.intent.category.LAUNCHER"></category> A                 <ActionAndroid:name= "Android.intent.action.MAIN"></Action> at             </Intent-filter> -         </Activity> -     </Application> -  - </Manifest>

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 android:orientation= "vertical"Android:layout_width= "Match_parent"4 Android:layout_height= "Match_parent">5 6     <TextView7         Android:layout_width= "Wrap_content"8 Android:layout_height= "Wrap_content"9 Android:text= "New Text"Ten Android:id= "@+id/textview" One android:textsize= "20DP" /> A  -     <EditText -         Android:layout_width= "Match_parent" the Android:layout_height= "Wrap_content" - Android:id= "@+id/edittext" /> -  -     <Button +         Android:layout_width= "Wrap_content" - Android:layout_height= "Wrap_content" + Android:text= "Save" A Android:id= "@+id/btnsave" /> at </LinearLayout>

Android Activity Global Data sharing