android碎片活动,Android：像碎片一样的活动向导
我在这里和其他网站上阅读了很多，但似乎没有人有使用片段作为向导一样的应用程序的工作解决方案。
我试图实现一个，但目前遇到了一些问题。
这里是活动XML与占位符步片段：
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent" >
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/cmd_previous"
android:layout_alignParentTop="true" >
android:id="@+id/cmd_previous"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/center_separator_buttons"
android:text="@string/rpz_cmd_perv" />
android:id="@+id/center_separator_buttons"
style="@style/wd_center_aligner"
android:layout_alignParentBottom="true" />
android:id="@+id/cmd_next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/center_separator_buttons"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="@string/rpz_cmd_next" />
在OnCreate中我添加的第一个步骤的活动：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_report_wizard);
if (this.getIntent().getExtras() != null) {
Bundle extra = this.getIntent().getExtras();
if (extra.containsKey(ISelected.ID_KEY)) {
_ID = extra.getLong(ISelected.ID_KEY);
}
}
if (findViewById(R.id.fragment_container) != null && savedInstanceState == null) {
_ReportTypeAndName = new ReportWizardTypeAndNameFragment();
_ReportTypeAndName.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().add(R.id.fragment_container, _ReportTypeAndName).commit();
}
}
下一按钮，替换当前片段新的一个。这似乎工作正常。
private void runNext(View view) {
switch (_CurrentPage) {
case ReportTypeAndName:
_ReportSelect = new ReportWizardSelectFragment();
_ReportSelect.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, _ReportSelect).addToBackStack(null).commit();
_CurrentPage = ReportWizardPage.ReportSelect;
break;
case ReportSelect:
_CurrentPage = ReportWizardPage.ReportPreview;
break;
case ReportPreview:
_CurrentPage = ReportWizardPage.None;
break;
default:
break;
}
}
但是在PREVIOUS-Button上，这是行不通的。
private void runPrevious(View view) {
switch (_CurrentPage) {
case ReportTypeAndName:
// Umstellung des Typs
_CurrentPage = ReportWizardPage.None;
this.finish();
break;
case ReportSelect:
_ReportTypeAndName = new ReportWizardTypeAndNameFragment();
_ReportTypeAndName.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, _ReportTypeAndName).commit();
_CurrentPage = ReportWizardPage.ReportTypeAndName;
break;
case ReportPreview:
_CurrentPage = ReportWizardPage.ReportSelect;
break;
default:
break;
}
}
我得到了以下错误(logcat的)：
FATAL EXCEPTION: main
android.view.InflateException: Binary XML file line #13: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at de.webducer.android.worktime.beta.ui.fragment.ReportWizardTypeAndNameFragment.onCreateView(ReportWizardTypeAndNameFragment.java:40)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:870)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1080)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:622)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1416)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:420)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalArgumentException: Binary XML file line #13: Duplicate id 0x7f05008b, tag null, or parent id 0x0 with another fragment for de.webducer.android.worktime.beta.ui.fragment.ReportTypeSelectorSpinnerFragment
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:275)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
... 18 more
片段的第40行是他们的充气
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.frag_report_wizard_1, container, false);
}
如何我可以绑定(添加/删除)片段没有得到重复的ID？或者我怎样才能重新使用片段没有新的视图初始化？
2012-06-06
WebDucer
+0
看看“造成”部分......它指向其他地方。发布'ReportTypeSelectorSpinnerFragment'，也许我们可以搞清楚。 –