Question

向活动添加片段。

扩展BaseActivity的我的活动：

 @Bind(R.id.layout_frame_container) protected FrameLayout mFrameContainer;

  @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_saved_searches_container);

        if(null == savedInstanceState){
            String screenTitle = getIntent().getExtras().getString(AppConstants.KEY_SCREEN_TITLE);
            FCoreFragment savedSearchFragment = FSavedSearchesList.instance(screenTitle);
            FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
            fragmentTransaction.add(mFrameContainer, savedSearchFragment).commit(); //I GET AN ERROR HERE CANT RESOLVE METHOD
        }
    }

FSavedSearchesList扩展了扩展Fragment（import android.support.v4.app.Fragment;）

的FCoreFragment

mFrameContainer是FrameLayout ID。

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:id="@+id/layout_frame_container">

</FrameLayout>

所以savedSearchFragment应该是Fragment类型。

你能让我知道如何解决这个问题吗？

这是错误：

C:\Development\Android\TrendsFragment.java
Warning:(628, 36) non-varargs call of varargs method with inexact argument type for last parameter;
cast to Object for a varargs call
cast to Object[] for a non-varargs call and to suppress this warning
C:\Development\Android\salesiMobile\src\main\java\com\salesi\mobile\module\accounts\ui\container\SavedSearchesContainer.java
Error:(39, 32) error: no suitable method found for add(FrameLayout,FCoreFragment)
method FragmentTransaction.add(Fragment,String) is not applicable
(argument mismatch; FrameLayout cannot be converted to Fragment)
method FragmentTransaction.add(int,Fragment) is not applicable
(argument mismatch; FrameLayout cannot be converted to int)
Error:Execution failed for task ':salesiMobile:compileRefactorDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
Information:BUILD FAILED
Information:Total time: 18.121 secs
Information:2 errors
Information:1 warning
Information:See complete output in console

Answer 1

您需要更新以下代码中的字段以调用任何片段。如果您想通过Instance方法调用您的片段，那么您可以在下面创建片段对象时更改它。

    Fragment fragment = new Fragment();
    if (arguments != null) {
      fragment.setArguments(arguments);
      arguments = null;
    }
    FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
    fragmentTransaction.setCustomAnimations(android.R.anim.fade_in,
        android.R.anim.fade_out);
    fragmentTransaction.replace(R.id.frame, fragment, arguments);
    fragmentTransaction.commit();

Answer 2

您需要使用getSupportFragmentManager()来支持片段，因为您使用android.support.v4.app.Fragment并使用R.id.layout_frame_container的FrameLayout的ID：

import android.support.v4.app.FragmentTransaction;

...

FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.layout_frame_container, savedSearchFragment)
                   .commit();

Answer 3

添加片段fragmentTransaction.add(mFrameContainer, savedSearchFragment).commit(); 通常需要容器ID而不是引用。将mFrameContainer更改为R.id.layout_frame_container，它应该有效。

此外，由于您使用的是android.support.v4.app.Fragment，因此将管理员从getFragmentManager()更改为getSupportFragmentManager().

FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

Answer 4

创建容器

       <FrameLayout
            android:id="@+id/container"
            android:layout_width="match_parent"
            android:layout_marginBottom="56dp"
            android:layout_height="match_parent" />

使用此MainActivity.java类定义片段管理器和transection globel

        fm = getSupportFragmentManager();
        ft = fm.beginTransaction();
        ft.add(R.id.container, new Home_Fragment(), 
       "Home_Fragment").commit();

Answer 5

在xml文件中创建FrameLayout容器。

<FrameLayout
            android:id="@+id/frame_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

打开你的java类并使用事务定义片段管理器。

     @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Your_Fragment your_Fragment=new Your_Fragment();
            replaceFragment(your_Fragment);
    }

    public void replaceFragment(Fragment fragment) {
            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
            transaction.replace(R.id.frame_container, fragment);
            transaction.commit();
        }

无法将片段添加到活动

5 个答案: