片段里面的片段 [英] Fragment Inside Fragment
问题描述
我需要关于在片段内处理片段的帮助，实际上我按下后退按钮时遇到问题.应用程序主屏幕有按钮并按下每个按钮视图替换为新的片段(并且该片段包含在另一个片段中)，动态添加/替换片段工作正常，按替换了 button1 片段，按下按钮时也会发生同样的情况，但如果我再次按下按钮，出现异常:
I need help regarding working on fragment inside fragment, actually I am facing a problem on pressing back button. Application Main screen has buttons and pressing on each button view replace with new fragment(and that fragment contain inside another fragment), dynamically adding/replacing fragment is working fine, by pressing button1 fragment replaced, same happens when pressing button, but if I press the button again, got an exception:
"Duplicate id 0x7f05000a, tag null, or parent id 0x7f050009 with
another fragment for com........ fragmentname"
表示已经添加了片段或内部片段，我正在尝试再次添加它们，任何人都知道如何在里面使用片段片段并来回移动没有任何问题，谢谢支持.
means fragment or inner fragments are already added and I am trying to add them again, anybody has idea how to work with fragment inside fragment and moving back and forth without any problem, thanks for the support.
MainActivity，其中片段是动态添加的，并且替换了.
MainActivity, where fragments are dynamical added and replaced.
public class FragmentInsideFragmentTestActivity extends Activity {
private Button button1;
private Button button2;
private Button button3;
private Button button4;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button1 =(Button) this.findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onButtonClick(view);
}
});
button2 =(Button) this.findViewById(R.id.button2);
button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onButtonClick(view);
}
});
button3 =(Button) this.findViewById(R.id.button3);
button3.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onButtonClick(view);
}
});
button4 =(Button) this.findViewById(R.id.button4);
button4.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
onButtonClick(view);
}
});
}
public void onButtonClick(View v) {
Fragment fg;
switch (v.getId()) {
case R.id.button1:
fg=FirstFragment.newInstance();
replaceFragment(fg);
break;
case R.id.button2:
fg=SecondFragment.newInstance();
replaceFragment(fg);
break;
case R.id.button3:
fg=FirstFragment.newInstance();
replaceFragment(fg);
break;
case R.id.button4:
fg=SecondFragment.newInstance();
replaceFragment(fg);
break;
}
}
private void replaceFragment(Fragment newFragment) {
FragmentTransaction trasection = getFragmentManager().beginTransaction();
if(!newFragment.isAdded()) {
try {
//FragmentTransaction trasection =
getFragmentManager().beginTransaction();
trasection.replace(R.id.linearLayout2, newFragment);
trasection.addToBackStack(null);
trasection.commit();
} catch (Exception e) {
// TODO: handle exception
// AppConstants.printLog(e.getMessage());
} else {
trasection.show(newFragment);
}
}
}
这里是布局:main.xml
Here is Layout: main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button1" />
<Button
android:id="@+id/button2"
android:text="Button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button3"
android:text="Button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button4"
android:text="Button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" />
</LinearLayout>
希望我努力解决了我的问题.
Hope I tried to clear my problem.
推荐答案
AFAIK，fragments 不能容纳其他 fragment.
AFAIK, fragments cannot hold other fragments.
更新
使用当前版本的 Android 支持包(或 API 级别 17 及更高级别的原生片段)，您可以通过 getChildFragmentManager() 嵌套片段.请注意，这意味着您需要在 API 级别 11-16 上使用片段的 Android 支持包版本，因为即使这些设备上有原生版本的片段，该版本也没有 getChildFragmentManager().
With current versions of the Android Support package -- or native fragments on API Level 17 and higher -- you can nest fragments, by means of getChildFragmentManager(). Note that this means that you need to use the Android Support package version of fragments on API Levels 11-16, because even though there is a native version of fragments on those devices, that version does not have getChildFragmentManager().
这篇关于片段里面的片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
