Question

这是我的代码 -

MainActivity.java

public class MainActivity extends AppCompatActivity 
    {
        DrawerLayout mDrawerLayout;
        NavigationView mNavigationView;
        FragmentManager mFragmentManager;
        FragmentTransaction mFragmentTransaction;

        ProgressDialog pd;
        JSONArray fetchedResponse;

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

            mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
            mNavigationView = (NavigationView) findViewById(R.id.somestuff);

            new GetDataFromService().execute(getString(R.string.api_url);

            mNavigationView.setNavigationItemSelectedListener(new                     
            NavigationView.OnNavigationItemSelectedListener() {

            @Override
            public boolean onNavigationItemSelected(MenuItem menuItem) {
                menuItem.setChecked(true);
                mDrawerLayout.closeDrawers();

                //Do rest of the stuff
            }
        });
    }

    public class GetDataFromService extends AsyncTask<String, Void, String> {

       @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);

                pd.dismiss();

                try {

                    fetchedResponse = new JSONArray(s);

                    if (fetchedResponse != null) {
                        final Menu menu = mNavigationView.getMenu();
                            for (int i = 0; i < fetchedResponse.length(); i++) {
                                String menu_title = fetchedResponse.getJSONObject(i).getString("menu_title");
                                int menu_id = fetchedResponse.getJSONObject(i).getInt("menu_id");
                                menu.add(Menu.NONE, menu_id, Menu.NONE, menu_title);
                            }
                    }
                    else{
                        //do error related stuff
                    }

                }catch (JSONException e) {
                    StringWriter sw = new StringWriter();
                    e.printStackTrace(new PrintWriter(sw));
                    String exceptionAsString = sw.toString();

                    System.out.println("Unexpected Error :");
                    System.out.println(exceptionAsString);
                }               
            }



    }

activity_main.xml中

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:orientation="vertical">

    <android.support.v7.widget.Toolbar
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/orange"
        android:id="@+id/toolbar"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:title="@string/app_name" />

    <!--<include layout="@layout/toolbar"/>-->

    <android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:id="@+id/drawerLayout"
        >



        <FrameLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/containerView">
        </FrameLayout>



        <android.support.design.widget.NavigationView
            xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:id="@+id/somestuff"
            app:itemTextColor="@color/black"
            app:menu="@menu/drawermenu"
            android:layout_marginTop="-24dp"
            android:theme="@style/MyNavigationView"
            />



    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

drawermenu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
</menu>

styles.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="windowActionBar">false</item>
        <!-- colorPrimary is used for the default action bar background -->
        <item name="windowActionModeOverlay">true</item>
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/orange</item>
        <item name="colorPrimaryDark">@android:color/holo_orange_dark</item>
    </style>

我能够填充MenuItems，但我不知道如何在每个项目之间添加分隔符（因为它们是动态的）以及如何在选择时突出显示每个项目？

Answer 1

2天前解决了，但很抱歉发布答案太晚了。希望解决方案能帮到某人。要突出显示抽屉菜单项，请在动态创建菜单时启用菜单的组可检查属性。

因此，在创建菜单项的MainActivity.java中，只需添加以下代码

即可

//Enable the group checkable property
menu.setGroupCheckable(<any integer representing group id>,true,true);

//Then highlight the default menu item 
menu.getItem(0).setChecked(true);

然后在“android.support.design.widget.NavigationView”标签内的activity_main.xml中添加以下行 -

android:theme="@style/MyNavigationView"

最后，在styles.xml中，在样式标记中创建上述主题，如下所示 -

<style name="MyNavigationView" parent="Widget.Design.NavigationView">
    <item name="android:dividerHeight">1dp</item>
    <item name="android:layout_marginTop">10dp</item>
    <item name="colorControlHighlight">#3dfdfd</item>
</style>

其次，事实证明，我对它的外观感到满意，因此在任何给定时间都不需要分隔符，至少选择了一个项目。

希望这有助于某人：）

无法将分隔符添加到动态创建的MenuItems并突出显示NavigationDrawer

1 个答案: