从Android的第一个应用程序开始第二个应用程序的活动

Question

我是新的android开发。我试图从按钮点击第一个应用程序开始第二个应用程序的活动。但是我的应用程序停止了。我的意图可能会出错。 这是logcat的：

02-12 18:06:50.948: D/gralloc_goldfish(1247): Emulator without GPU emulation detected. 
02-12 18:07:02.338: D/AndroidRuntime(1247): Shutting down VM 
02-12 18:07:02.338: W/dalvikvm(1247): threadid=1: thread exiting with uncaught exception (group=0xb3ad1b90) 
02-12 18:07:02.528: E/AndroidRuntime(1247): FATAL EXCEPTION: main 
02-12 18:07:02.528: E/AndroidRuntime(1247): Process: smd.homework1.question2, PID: 1247 
02-12 18:07:02.528: E/AndroidRuntime(1247): java.lang.IllegalStateException: Could not execute method of the activity 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.view.View$1.onClick(View.java:3814) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.view.View.performClick(View.java:4424) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.view.View$PerformClick.run(View.java:18383) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.os.Handler.handleCallback(Handler.java:733) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.os.Handler.dispatchMessage(Handler.java:95) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.os.Looper.loop(Looper.java:137) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.ActivityThread.main(ActivityThread.java:4998) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at java.lang.reflect.Method.invoke(Method.java:515) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at dalvik.system.NativeStart.main(Native Method) 
02-12 18:07:02.528: E/AndroidRuntime(1247): Caused by: java.lang.reflect.InvocationTargetException 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at java.lang.reflect.Method.invoke(Method.java:515) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.view.View$1.onClick(View.java:3809) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  ... 11 more 
02-12 18:07:02.528: E/AndroidRuntime(1247): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=textViewActivity } 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1632) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Activity.startActivityForResult(Activity.java:3423) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Activity.startActivityForResult(Activity.java:3384) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Activity.startActivity(Activity.java:3626) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at android.app.Activity.startActivity(Activity.java:3594) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  at smd.homework1.question2.MainActivity.function1(MainActivity.java:36) 
02-12 18:07:02.528: E/AndroidRuntime(1247):  ... 14 more 

线36是startActivity(i); 按钮点击功能是：

public void function1(View v){ 
    Intent i= new Intent("textViewActivity"); 
    startActivity(i); 
} 

在

<activity 
    android:name="Activity2" 
    android:label="@string/a2" > 
    <intent-filter> 
     <action android:name="textViewActivity" /> 
    </intent-filter> 
</activity> 

Answer 1

在机器人的每个应用程序是一个独立的进程的mainifest，除了通过意图之外，你不能进行任何通信，所以你需要从app1发送一个动作意图，并实现一个广播接收器在app2中捕捉意图并激发您的活动。

app1->activityA->send intent->app2 receiver->start activity-> activityB 

here是官方文档提供了在那里你可以跳过broacastreceivers为您的活动将是一定的intent filter

Answer 2

接收器在AndroidManifest.xml声明活性

<activity 
    android:name="Activity2" 
    android:label="@string/a2" 
    android:exported="true" > 
</activity> 

代码另一种方式执行它是：

Intent intent = new Intent(); 
intent.setComponent(new ComponentName("com.example", "com.example.Activity2")); 
startActivity(intent); 

将com.example替换为第二个应用程序包名称，将com.example.Activity2替换为具有包限定的活动名称。

---

声明活动AndroidManifest.xml作为

<activity 
    android:name="Activity2" 
    android:label="@string/a2" > 
    <intent-filter> 
     <action android:name="com.example.myintent" /> 
    </intent-filter> 
</activity> 

要执行的代码是：

Intent intent = new Intent(); 
intent.setAction("com.example.myintent"); 
startActivity(intent); 

替换com.example.myintent与你的意图的名字。