FragmentOne
public class FragmentOne extends Fragment {
public FragmentOne() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_main2, container,
true);
return view;
}
}
你好，我是初学者，我尝试了所有我能找到的，问题是我需要这个 fragment 来初始化类 BaseAct.java，在 fragment 引用 activity_main2 之后，我找到任何东西所以我希望你能帮帮我，谢谢你的建议
如果你需要，我可以给你链接所有的源文件
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Intent intent = new Intent(getActivity(), BaseAct.class);
startActivity(intent);
View view = inflater.inflate(R.layout.activity_main2, container,
false);
return view;
}
LogCat
Process: com.elitiv.myapplication2.app, PID: 2941
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.elitiv.myapplication2.app/com.elitiv.myapplication2.app.MainActivity}: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.elitiv.myapplication2.app/com.elitiv.myapplication2.app.BaseAct}; have you declared this activity in your AndroidManifest.xml?
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.elitiv.myapplication2.app/com.elitiv.myapplication2.app.BaseAct}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1541)
at android.app.Activity.startActivityFromFragment(Activity.java:3957)
at android.app.Activity.startActivityFromFragment(Activity.java:3932)
at android.app.Fragment.startActivity(Fragment.java:1054)
at android.app.Fragment.startActivity(Fragment.java:1033)
at com.elitiv.myapplication2.app.FragmentOne.onCreateView(FragmentOne.java:23)
at android.app.Fragment.performCreateView(Fragment.java:1700)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
at android.app.BackStackRecord.run(BackStackRecord.java:684)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
at android.app.Activity.performStart(Activity.java:5240)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
最佳答案
您可以通过启动显式 Intent 从 Fragment 的 onCreateView() 启动一个新的 Activity到您要启动的 Activity。
此外，如 rcoro 所说，请将 false 传递给 inflate() 的第三个参数。传递 false 将阻止框架将 Fragment 添加到层次结构两次，这将导致错误。
关于android - 从 fragment 到 Activity 的交易(java类)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23878965/