Question

我正在关注片段示例https://gist.github.com/daichan4649/2947119。

我在按钮点击事件后动态添加片段。但是片段与按钮重叠。当我在此屏幕上按回键时，活动将关闭。

需要帮助才能在单击按钮后仅显示片段，如果在添加片段后按下背面，则只应关闭顶部片段。

这是我的测试代码。 MainActivity.java

public class MainActivity extends FragmentActivity {
private static Button mBtn;
private static final String TAG_LIST = "list";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
return;
}

mBtn = (Button) findViewById(R.id.clickme);
mBtn.setOnClickListener(new View.OnClickListener() {

@SuppressLint("NewApi")
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Fragment fragment = getFragmentManager().findFragmentByTag(TAG_LIST);
             if (fragment == null) {
                 fragment = TestListFragment.newInstance();
                 FragmentTransaction ft = getFragmentManager().beginTransaction();
                 ft.add(android.R.id.content, fragment, TAG_LIST);
                 ft.commit();
             }

        }
    });
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

 }

TestListFragment.java

public class TestListFragment extends ListFragment {

public static TestListFragment newInstance() {
    return new TestListFragment();
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle  savedInstanceState){
    ViewGroup rootView = (ViewGroup) inflater.inflate(android.R.id.content, container, false);        
    return rootView;
}
@SuppressLint("NewApi")
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), R.layout.list_column, R.id.text);
    setListAdapter(adapter);
    adapter.addAll(createDataList(10));
}

private static List<String> createDataList(int counts) {
    List<String> list = new ArrayList<String>();
    for (int i = 0; i < counts; i++) {
        list.add("i=" + i);
    }
    return list;
}

@Override  
public void onListItemClick(ListView l, View v, int position, long id) {
    //Toast.makeText(getActivity(), "List Item Clicked", Toast.LENGTH_SHORT).show();

    //On item click, launch the DialogFragment
    TestDialogFragment moveFragment = new TestDialogFragment( );
    moveFragment.show(getFragmentManager(), "Test List Fragment");
}

TestDilogFragment.java

public class TestDialogFragment extends DialogFragment {

private View testDialogFragment = null;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    //Fill the layout as per Your requirement
    testDialogFragment = inflater.inflate(R.layout.activity_list_fragment, container);
    return testDialogFragment;
}

 }

活性-main.xml中

<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" >

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/clickme"
    android:text="ClickMe" />

</RelativeLayout>

activity_list_fragment.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"
>

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

</RelativeLayout>

Answer 1

更改您的activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parentt" >

    <Button
        android:id="@+id/clickme"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="Button" />

    <FrameLayout
        android:id="@+id/container"
        android:layout_above="@id/clickme"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
         >
    </FrameLayout>

</RelativeLayout>

底部有Button，顶部有ViewGroup FrameLayou t。您将Fragment添加到容器中。

在ManiActivtiy改为

  ft.add(R.id.container, fragment, TAG_LIST);

重叠片段与活动视图

1 个答案: