在我的活动中,我正在从包含Button和片段的xml文件中扩展布局。 activityView是我的View对象。从视图中获取片段实例
LayoutInflater layoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Intent intent = getIntent();
View activityView = layoutInflater.inflate(R.layout.my_profile, null,false);
我得到按钮LIK这样的: docButton =(按钮)activityView.findViewById(R.id.doc_prof_name);
我的appforce关闭,如果我得到这样的片段: FragmentManager fm = getFragmentManager(); final Fragment f1 = fm.findFragmentById(R.id.fragment1);
我没有得到如何获得片段实例,它是在activityView即my_profile.xml
<Button
android:id="@+id/btn1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="abc" />
<fragment android:name="com.example.myapp.MainActivity$FirstFragment"
android:id="@+id/fragment1" android:layout_weight="1"
android:layout_width="0px" android:layout_height="wrap_content"
/>
这是我的logcat错误
09-29 15:08:18.319: E/AndroidRuntime(12901): ... 11 more
09-29 15:08:18.319: E/AndroidRuntime(12901): Caused by: java.lang.NullPointerException
09-29 15:08:18.319: E/AndroidRuntime(12901): at com.example.tdoapp.DocProfile$SecondFragment.onCreateView(DocProfile.java:130)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.app.Fragment.performCreateView(Fragment.java:1700)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:866)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1040)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1142)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.app.Activity.onCreateView(Activity.java:4835)
09-29 15:08:18.319: E/AndroidRuntime(12901): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
09-29 15:08:18.319: E/AndroidRuntime(12901): ... 19 more
的可能重复的[应用与FragmentManager崩溃使用Google地图时替换](http://stackoverflow.com/questions/22119051/app-crashes-with-fragmentmanager-replace-when-using-googlemaps) – 2014-09-29 09:31:52
没有我不了解我在哪里使用View对象。 FragmentManager fm = getFragmentManager(); final Fragment f1 = fm.findFragmentById(R.id.fragment1); – Manasi 2014-09-29 09:56:01
你可以发布FirstFragment类的代码吗? – 2014-09-30 02:29:39