由於某種原因,我的應用程序在我正在測試的平板電腦上崩潰,但不是在電話上。我不確定是什麼導致了這一點。它發生在應用程序的不同部分,但始終從一個屏幕移動到另一個屏幕。Android:應用程序在平板電腦上崩潰,但不是在手機上
這裏似乎崩潰的應用程序的代碼:
public void About(View view)
{
Intent i = new Intent();
i.setClassName("com.example","com.example.timestableseasy.About");
startActivity(i);
}
about.java
public class About extends Activity
{
TextView home;
@Override
public void onBackPressed() {
}
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_about);
home = (TextView) findViewById(R.id.home);
home.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Log.d("Exercise", "button clicked");
Intent i = new Intent();
i.setClassName("com.example","com.example.timestableseasy.Menu2");
startActivity(i);
}
});
}
}
這裏是logcat的:
06-16 16:20:59.465: D/AndroidRuntime(6281): Shutting down VM
06-16 16:20:59.465: W/dalvikvm(6281): threadid=1: thread exiting with uncaught exception (group=0x412f2930)
06-16 16:20:59.473: E/AndroidRuntime(6281): FATAL EXCEPTION: main
06-16 16:20:59.473: E/AndroidRuntime(6281): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.timestableseasy.About}: java.lang.NullPointerException
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2295)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread.access$700(ActivityThread.java:150)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1280)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.os.Handler.dispatchMessage(Handler.java:99)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.os.Looper.loop(Looper.java:175)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread.main(ActivityThread.java:5279)
06-16 16:20:59.473: E/AndroidRuntime(6281): at java.lang.reflect.Method.invokeNative(Native Method)
06-16 16:20:59.473: E/AndroidRuntime(6281): at java.lang.reflect.Method.invoke(Method.java:511)
06-16 16:20:59.473: E/AndroidRuntime(6281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
06-16 16:20:59.473: E/AndroidRuntime(6281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
06-16 16:20:59.473: E/AndroidRuntime(6281): at dalvik.system.NativeStart.main(Native Method)
06-16 16:20:59.473: E/AndroidRuntime(6281): Caused by: java.lang.NullPointerException
06-16 16:20:59.473: E/AndroidRuntime(6281): at com.example.timestableseasy.About.onCreate(About.java:25)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.Activity.performCreate(Activity.java:5283)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
06-16 16:20:59.473: E/AndroidRuntime(6281): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209)
06-16 16:20:59.473: E/AndroidRuntime(6281): ... 11 more
此之前的工作,但出於某種原因,在上週停止工作。
編輯:我已經消除了在大布局文件中出現錯誤的可能性 - 強制應用程序通過刪除大文件來加載正常版本,它仍然顯示按下按鈕轉到關於屏幕。
你有一個NullPointerEx,你可以發佈更多的關於活動類嗎? – PedroCactus
是的,但它只是一個按鈕和背景 –
@PedroCactus我在Java類中添加。有沒有什麼特別的關於它 –