我是新來的android和我從教程學習。我想要做的是鏈接2 xml頁面。登錄後進入內容頁面。問題是當我在我的類文件中添加意圖代碼時,模擬器提供了錯誤消息「應用程序已停止工作」,否則代碼工作正常。如何編碼活動頁面... android
這是意圖的代碼,我曾嘗試:
Intent myIntent = new Intent(v.getContext(), secondpage.class);
startActivityForResult(myIntent, 1);
我也試過這個
Intent myIntent = new Intent(MainActivity.this, secondpage.class);
startActivity(myIntent);
和最後一個,這
Intent myIntent = new Intent(getApplicationContext(), secondpage.class);
startActivity(myIntent);
我secondpage.class代碼如下(這個xml文件的名字是cf)
public class secondpage extends Activity{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cf);
}
}
我在做什麼錯?爲什麼意圖導致模擬器閃爍錯誤消息?
我的manifest.xml
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.qwedd.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
我的日誌貓
02-10 03:07:49.440: D/dalvikvm(903): Not late-enabling CheckJNI (already on)
02-10 03:07:52.290: D/dalvikvm(903): GC_FOR_ALLOC freed 54K, 5% free 2890K/3016K, paused 39ms, total 41ms
02-10 03:07:52.370: I/dalvikvm-heap(903): Grow heap (frag case) to 12.512MB for 10092616-byte allocation
02-10 03:07:52.440: D/dalvikvm(903): GC_FOR_ALLOC freed 2K, 2% free 12744K/12876K, paused 65ms, total 65ms
02-10 03:07:54.010: D/(903): HostConnection::get() New Host Connection established 0xb81424b8, tid 903
02-10 03:07:54.080: W/EGL_emulation(903): eglSurfaceAttrib not implemented
02-10 03:07:54.090: D/OpenGLRenderer(903): Enabling debug mode 0
02-10 03:08:00.020: D/InputEventConsistencyVerifier(903): KeyEvent: ACTION_UP but key was not down.
02-10 03:08:00.020: D/InputEventConsistencyVerifier(903): in android.widget.EditText{b3d9ea80 VFED..CL .F...... 15,315-465,374 #7f080001 app:id/txtPassword}
02-10 03:08:00.020: D/InputEventConsistencyVerifier(903): 0: sent at 103941000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=103941, downTime=103804, deviceId=0, source=0x101 }
02-10 03:08:38.556: D/AndroidRuntime(903): Shutting down VM
02-10 03:08:38.556: W/dalvikvm(903): threadid=1: thread exiting with uncaught exception (group=0xb3aeaba8)
02-10 03:08:38.566: E/AndroidRuntime(903): FATAL EXCEPTION: main
02-10 03:08:38.566: E/AndroidRuntime(903): Process: com.example.qwedd, PID: 903
02-10 03:08:38.566: E/AndroidRuntime(903): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.qwedd/com.example.qwedd.secondpage}; have you declared this activity in your AndroidManifest.xml?
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Activity.startActivityForResult(Activity.java:3424)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Activity.startActivityForResult(Activity.java:3385)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Activity.startActivity(Activity.java:3627)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.Activity.startActivity(Activity.java:3595)
02-10 03:08:38.566: E/AndroidRuntime(903): at com.example.qwedd.MainActivity$1.onClick(MainActivity.java:40)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.view.View.performClick(View.java:4438)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.view.View$PerformClick.run(View.java:18422)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.os.Handler.handleCallback(Handler.java:733)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.os.Handler.dispatchMessage(Handler.java:95)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.os.Looper.loop(Looper.java:136)
02-10 03:08:38.566: E/AndroidRuntime(903): at android.app.ActivityThread.main(ActivityThread.java:5017)
02-10 03:08:38.566: E/AndroidRuntime(903): at java.lang.reflect.Method.invokeNative(Native Method)
02-10 03:08:38.566: E/AndroidRuntime(903): at java.lang.reflect.Method.invoke(Method.java:515)
02-10 03:08:38.566: E/AndroidRuntime(903): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-10 03:08:38.566: E/AndroidRuntime(903): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-10 03:08:38.566: E/AndroidRuntime(903): at dalvik.system.NativeStart.main(Native Method)
02-10 03:09:23.546: I/Process(903): Sending signal. PID: 903 SIG: 9
發佈清單和堆棧跟蹤 – Raghunandan
從LogCat發佈您的AndroidManifest.xml或錯誤 –
可能是您沒有將第二頁的活動放到清單文件中。將此行放在主要活動標記之後 –
PSK