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我想替換碎片。如何用片段內的按鈕替換片段？
我加了&代替了java代碼片段。
這是我的main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@+id/fragmentView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/buttonLayout" >
</FrameLayout>
<LinearLayout
android:id="@+id/buttonLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" >
<Button
android:id="@+id/btnHome"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/home" />
<Button
android:id="@+id/btnPass"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/afragment" />
</LinearLayout>
</RelativeLayout>
，這是我的UI捕捉。
我可以與底部按鍵替換片段。
我想用HOME片段中的按鈕替換'A片段'，'B片段'，'C片段'，就像你看到的那樣。
這是我的HomeFragment。
public class HomeFragment extends Fragment implements OnClickListener {
BaseFragmentActivity baseFragmentActivity;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.homefragment, container, false);
baseFragmentActivity = new BaseFragmentActivity();
root.findViewById(R.id.btnGoGame).setOnClickListener(this);
root.findViewById(R.id.btnGoMusic).setOnClickListener(this);
root.findViewById(R.id.btnGoShopping).setOnClickListener(this);
return root;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnA:
baseFragmentActivity.fragmentReplace(baseFragmentActivity.A_FRAGMENT);
break;
case R.id.btnB:
baseFragmentActivity.fragmentReplace(baseFragmentActivity.B_FRAGMENT);
break;
case R.id.btnC:
baseFragmentActivity.fragmentReplace(baseFragmentActivity.C_FRAGMENT);
break;
default:
break;
}
}
}
& BaseFragmentActivity code。
public class BaseFragmentActivity extends FragmentActivity{
public final int HOME_FRAGMENT = 0;
public final int A_FRAGMENT = 1;
public final int B_FRAGMENT = 2;
public final int C_FRAGMENT = 3;
private HomeFragment homeFragment;
private AFragment aFragment;
private BFragment bFragment;
private CFragment cFragment;
public void fragmentReplace(int fragIndex){
FragmentManager fragManager = getSupportFragmentManager();
FragmentTransaction transaction = fragManager.beginTransaction();
transaction.replace(R.id.fragmentView, getFragment(fragIndex));
transaction.addToBackStack(null);
transaction.commit();
}
private Fragment getFragment(int index) {
Fragment newFragment = null;
switch (index) {
case HOME_FRAGMENT:
if(homeFragment == null) {
homeFragment = new HomeFragment();
}
newFragment = homeFragment;
break;
case A_FRAGMENT:
if(aFragment == null) {
aFragment = new AFragment();
}
newFragment = aFragment;
break;
case B_FRAGMENT:
if(bFragment == null) {
bFragment = new BFragment();
}
newFragment = bFragment;
break;
case C_FRAGMENT:
if(cFragment == null) {
cFragment = new CFragment();
}
newFragment = cFragment;
break;
default:
break;
}
return newFragment;
}
}
但是，如果我觸摸A，B，C按鈕，我有錯誤。
09-10 20:15:28.943: E/AndroidRuntime(16262): FATAL EXCEPTION: main
09-10 20:15:28.943: E/AndroidRuntime(16262): Process: com.sa.fragmenttest, PID: 16262
09-10 20:15:28.943: E/AndroidRuntime(16262): java.lang.IllegalStateException: Activity has been destroyed
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1365)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574)
09-10 20:15:28.943: E/AndroidRuntime(16262): at com.sa.tpass_sa.BaseFragmentActivity.fragmentReplace(BaseFragmentActivity.java:49)
09-10 20:15:28.943: E/AndroidRuntime(16262): at com.sa.tpass_sa.fragments.HomeFragment.onClick(HomeFragment.java:44)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.view.View.performClick(View.java:4461)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.view.View$PerformClick.run(View.java:18520)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.os.Handler.handleCallback(Handler.java:733)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.os.Handler.dispatchMessage(Handler.java:95)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.os.Looper.loop(Looper.java:136)
09-10 20:15:28.943: E/AndroidRuntime(16262): at android.app.ActivityThread.main(ActivityThread.java:5103)
09-10 20:15:28.943: E/AndroidRuntime(16262): at java.lang.reflect.Method.invokeNative(Native Method)
09-10 20:15:28.943: E/AndroidRuntime(16262): at java.lang.reflect.Method.invoke(Method.java:515)
09-10 20:15:28.943: E/AndroidRuntime(16262): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
09-10 20:15:28.943: E/AndroidRuntime(16262): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606)
09-10 20:15:28.943: E/AndroidRuntime(16262): at dalvik.system.NativeStart.main(Native Method)
這可能嗎？以及如何做到這一點？
change baseFragmentActivity = new BaseFragmentActivity（）; baseFragmentActivity =（BaseFragmentActivity）getActivity（）; – 2014-09-10 12:01:29