我的应用程序有问题。该应用程序完美运行。如果按后退按钮,则该应用程序显然可以关闭,没有任何问题。如果按主页按钮,则该应用程序将在后台运行。如果我立即打开该应用程序,则可以使用,但是如果我打开其他应用程序,然后再打开应用程序,则经常会崩溃。
我该如何解决?我必须实现onPause方法吗?但是如何?
26 21:46:27.341 29621-29621/parlamento_italiano.android E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: parlamento_italiano.android, PID: 29621
java.lang.RuntimeException: Unable to start activity ComponentInfo{parlamento_italiano.android/com.prova.prova3.Quarta}: java.lang.NumberFormatException: Invalid int: ""
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3119)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3218)
at android.app.ActivityThread.access$1000(ActivityThread.java:198)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1676)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6837)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
Caused by: java.lang.NumberFormatException: Invalid int: ""
at java.lang.Integer.invalidInt(Integer.java:138)
at java.lang.Integer.parseInt(Integer.java:358)
at java.lang.Integer.parseInt(Integer.java:334)
at com.prova.prova3.R2.onCreateView(R2.java:77)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1026)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1189)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2001)
at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:165)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:507)
at com.prova.prova3.Quarta.onStart(Quarta.java:291)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1250)
at android.app.Activity.performStart(Activity.java:6538)
这导致崩溃
int x = Integer.parseInt(numVoti.replaceAll("[\\D]", ""));
最佳答案
首先,当您按下主屏幕按钮时,您的应用程序不会在后台运行。它只是添加到Back Stack中。其次,尝试向我们解释您的应用使用的资源,以及它们如何与其他应用交互。
关于android - 打开其他应用后,Android应用崩溃,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33355206/