Question

我正在尝试在设计视图中的Android操作栏上添加菜单图标，我可以在正确的位置看到菜单，但是当我尝试预览时，将其设置为app:showAsAction="always"时，菜单未显示为隐藏的下拉菜单。谁能帮我解决此问题？

设计视图

APP运行预览

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<item
    android:id="@+id/action_home"
    android:orderInCategory="0"
    android:icon="@drawable/outline_home_white_48"
    app:showAsAction="always"
    android:title="Home">
</item>

<item
    android:id="@+id/action_option"
    android:icon="@drawable/menu_icon"
    android:title="Options"
    app:showAsAction="always">
    <menu>
        <item
            android:id="@+id/action_settings"
            android:title="@string/action_settings">
        </item>
        <item
            android:id="@+id/action_update"
            android:title="@string/update_app">
        </item>
    </menu>
</item>
</menu>

我的Java代码

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu items for use in the action bar
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);
        return super.onCreateOptionsMenu(menu);
    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // toggle nav drawer on selecting action bar app icon/title
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        // Handle action bar actions click
        Fragment fragment = null;
        switch (item.getItemId()) {
            case R.id.action_home:
                fragment = new HomeFragment();
                break;
            default:

        }
        if (fragment != null) {
            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();

        }
        return super.onOptionsItemSelected(item);
    }

Android构建版本

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'

    defaultConfig {
        applicationId "com.myapp.aaa"
        minSdkVersion 22
        targetSdkVersion 28
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

Answer 1

尝试使用android:showAsAction而不是app:showAsAction。同时添加tools:ignore="AppCompatResource"

我已经解决了这里的完整代码

<item
    android:id="@+id/action_home"
    android:orderInCategory="0"
    android:icon="@drawable/outline_home_white_48"
    android:showAsAction="always"
    android:title="Home"
    tools:ignore="AppCompatResource">
</item>

<item
    android:id="@+id/action_search"
    android:orderInCategory="0"
    android:icon="@drawable/search_icon_white"
    android:showAsAction="always|collapseActionView"
    app:actionViewClass="android.widget.SearchView"
    android:title="Search Branch"
    tools:ignore="AppCompatResource">
</item>

<item
    android:id="@+id/action_option"
    android:icon="@drawable/menu_icon"
    android:title="Options"
    android:showAsAction="always"
    tools:ignore="AppCompatResource">
    <menu>
        <item
            android:id="@+id/action_settings"
            android:title="@string/action_settings">
        </item>
        <item
            android:id="@+id/action_update"
            android:title="@string/update_app">
        </item>
    </menu>
</item>

操作栏菜单图标未显示在正确位置，但显示在下拉列表中

1 个答案: