Android 错误:FragmentTransaction类型中的add(int,Fragment,String)方法不适用于参数(int,FragementTest,String)
我试着用碎片。但是在MainActivity.java文件中,Android 错误:FragmentTransaction类型中的add(int,Fragment,String)方法不适用于参数(int,FragementTest,String),android,Android,我试着用碎片。但是在MainActivity.java文件中,transaction.add(R.id.my_layout,testfrag,”)未正确启动。请在下面找到我使用的代码 package com.example.testtabs; import android.os.Bundle; import android.app.Activity; import android.app.FragmentManager; import android.app.FragmentTransacti
transaction.add(R.id.my_layout,testfrag,”)代码>未正确启动。请在下面找到我使用的代码
package com.example.testtabs;
import android.os.Bundle;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.TabActivity;
import android.view.Menu;
import android.widget.TabHost;
import android.support.v4.app.Fragment;
import com.example.testtabs.R;
public class MainActivity extends TabActivity {
TabHost tab;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragementTest testfrag=new FragementTest();
FragmentManager manager=getFragmentManager();
FragmentTransaction transaction=manager.beginTransaction();
transaction.add(R.id.my_layout, testfrag, "");//Error is here
}
}
activity\u main.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:id="@+id/my_layout"
>
Fragement.test
package com.example.testtabs;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A simple {@link android.support.v4.app.Fragment} subclass.
*
*/
public class FragementTest extends Fragment {
public FragementTest() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_fragement, container, false);
}
}
更改:
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v4.app.Fragment;
致:
或---
更改:
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v4.app.Fragment;
到
所有片段都应该是android.app.Fragment。如果您想使用android.support.v4.app.Fragment,您应该使用getSupportFragmentManager()获取管理器。这对我有用:
使用getSupportFragmentManager()而不是使用getFragmentManager 什么是片段测试?您的FragmentTest
是否扩展Fragment
?转换为(片段)。您肯定在FragmentTest中扩展了Fragment(v4)。@AndrewT。请查找我编辑的代码现在我正在获取FragmentManager=getFragmentManager();方法错误类型不匹配:无法从android.app.FragmentManager转换为android.support.v4.app.FragmentManageruse getSupportFragmentManager(),您的活动也必须是FragmentManager()。请检查我编辑的ans,而不是更改FragmentManager的导入,将其更改为Fragment。您应该添加“g”“getSupportFragmentManager();”
import android.app.Fragment;