Question

我在重新设置标签交换机之间的片段时遇到了一些问题，我需要替换当前系统，它使用beginTransaction（）。replace（）来开始交换（）。隐藏/显示（），但我和当我打电话给这个时，我得到一个空片段，有人可以帮助我做这个工作吗？

这是我的班级：

public class MainScreen extends BaseActivity{

private Fragment fragment;

public MainScreen() {
    super(R.string.app_name);
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (savedInstanceState != null)
        fragment = getSupportFragmentManager().getFragment(savedInstanceState, "mContent");
    if (fragment == null)
        fragment = new HomeFragment();  

    setContentView(R.layout.main_screen);
    getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, fragment).commit();

    setBehindContentView(R.layout.main_menu_frame);
    getSupportFragmentManager().beginTransaction().replace(R.id.main_menu_frame, new MainMenuListFragment()).commit();


    getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    getSupportFragmentManager().putFragment(outState, "mContent", fragment);
}

@Override
protected void onResume() {
    super.onResume();
    getSlidingMenu().showContent();
}

public void switchContent(Fragment fragment) {

    FragmentManager fm = getSupportFragmentManager();
    android.support.v4.app.FragmentTransaction ft = fm.beginTransaction();
    ft.hide(this.fragment);

    this.fragment = fragment; 

    ft.show(fragment);
    ft.commit();
    getSlidingMenu().showContent();
    //getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, fragment).commit();
}

public void setActionBarTitle(String title){
    getActionBar().setTitle(title);
}

}

现在我正在做

FragmentManager fm = getSupportFragmentManager();
    android.support.v4.app.FragmentTransaction ft = fm.beginTransaction();
    ft.hide(this.fragment);

    this.fragment = fragment; 

    ft.show(fragment);
    ft.commit();
    getSlidingMenu().showContent();

取代getSupportFragmentManager（）。beginTransaction（）。replace（R.id.content_frame，fragment）.commit（）; 但是当我隐藏

时，这给我留下了一个空片段

有人可以帮助我吗？谢谢！

将replace（）更改为隐藏/显示片段android

0 个答案: