android - menu.xml 中定义的可绘制矢量图标未显示在 appBar 中？

Question

menu.xml中的drawable vector icon并没有出现在appBar中，有两个，一个是搜索icon，一个是filter icon。我不知道我哪里错了。这是我的 Activity fragment :

static String query;
static {
    AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
}
Toolbar myToolbar;
SearchView searchView = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search);
    //Set custom AppBar
    myToolbar = findViewById(R.id.search_toolbar);
    //myToolbar.inflateMenu(R.menu.menu_search);
    initToolBarMenuIcons();
    setSupportActionBar(myToolbar);

    myToolbar.setOnMenuItemClickListener(this);
    setupViews();

    //Check internet connection
    new InternetCheck(internet -> {
        //Display no internet Toast if there's no internet
        if (!internet) {
            Toast.makeText(this, "no internet", Toast.LENGTH_SHORT).show();
        }
    });
}

@MainThread
@SuppressLint("NewApi") //suppress warning, since using DrawableCompat to set tint
public void initToolBarMenuIcons() {
    myToolbar.inflateMenu(R.menu.menu_search);
    //Manually adding icon since it's a vector drawable and we can't currently inflate from XML into menuitems
    Drawable wrappedFilterIcon = DrawableCompat
            .wrap(Objects.requireNonNull(AppCompatResources
                    .getDrawable(getBaseContext(), R.drawable.ic_filter_list_white_24dp)));
    Drawable wrappedSearchIcon = DrawableCompat
            .wrap(Objects.requireNonNull(AppCompatResources
                    .getDrawable(getBaseContext(), R.drawable.ic_search_white_24dp)));
    //Tint it too
    DrawableCompat.setTint(wrappedFilterIcon, Color.WHITE);
    DrawableCompat.setTint(wrappedSearchIcon, Color.WHITE);
    //Set the tinted vector drawable to the item
    myToolbar.getMenu().findItem(R.id.action_filter).setIcon(wrappedFilterIcon);
    myToolbar.getMenu().findItem(R.id.action_search).setIcon(wrappedSearchIcon);
}
[snip...]

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is  present.
    getMenuInflater().inflate(R.menu.menu_search, menu);
    MenuItem searchItem = menu.findItem(R.id.action_search);
    searchView = (SearchView) searchItem.getActionView();
    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            onArticleSearch(null);
            searchView.clearFocus();
            return true;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            return false;
        }
    });
    return super.onCreateOptionsMenu(menu);
}

这是指定项目和图标源的 menu.xml。我使用 app:srcCompat 作为图标路径。

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
    android:id="@+id/action_filter"
    app:showAsAction="always"
    app:srcCompat="@drawable/ic_filter_list_white_24dp"
    tools:ignore="MenuTitle"
    android:orderInCategory="2" />

<item android:id="@+id/action_search"
    android:orderInCategory="1"
    android:title="Search Article"
    app:srcCompat="@drawable/ic_search_white_24dp"
    app:showAsAction="always|collapseActionView"
    app:actionViewClass="android.support.v7.widget.SearchView" />

我导入了以下库:实现“com.android.support:support-vector-drawable:27.1.1” 实现“com.android.support:animated-vector-drawable:27.1.1”

我在我的应用程序 Gradle 文件中设置了它:

android {
compileSdkVersion 27
defaultConfig {
    applicationId "com.realty.drake.newyorktimessearcher"
    minSdkVersion 16
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    vectorDrawables.useSupportLibrary true
}

请帮帮我

Answer 1

看来我不明白你的问题。尝试像这样将 drawable 设置为您的菜单:

  <item
        android:id="@+id/menuItem"
        android:icon="@drawable/yourdrawable"
        />

对不起兄弟，下面的文字是关于在菜单中使用animateddrawable。

矢量动画文件实现Animatable接口(interface)，启动动画需要请求Drawable，将其带入Animatable，调用start()方法。我在 onOptionsItemSelected 中这样做:

  override fun onOptionsItemSelected(item: MenuItem?): Boolean {
        when (item?.itemId) {
           ..........
            R.id.editNotification -> {
                (item.icon as Animatable).start()
            }
        }
        return super.onOptionsItemSelected(item)
    } 

对于 Java 使用:

((Animatable) item.getIcon()).start();

但是您可能遇到了我遇到过的问题:如何向后设置动画。我没有本地解决方案，但你可以这样做:1.创建带倒退动画的drawable2. 实现 AnimationCallback 并在动画结束时切换那些可绘制对象。例如:

override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.menu_edit_notification, menu)
        animDrawable = AnimatedVectorDrawableCompat.create(this, R.drawable.avd_edit_to_close)!!
        menu?.getItem(0)?.icon = animDrawable
        return true
    }

    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
        when (item?.itemId) {
           ..............................
            R.id.editNotification -> {
                animDrawable.registerAnimationCallback(object : Animatable2Compat.AnimationCallback() {
                    override fun onAnimationEnd(drawable: Drawable?) {
                        animDrawable = AnimatedVectorDrawableCompat.create(this@NotificationActivity, if (inEditMode) R.drawable.avd_edit_to_close else R.drawable.avd_close_to_edit)!!
                        inEditMode = !inEditMode
                        item.icon = animDrawable
                    }
                })
                animDrawable.start()
            }
        }
        return super.onOptionsItemSelected(item)
    }

其中:animDrawable - 是 AnimatedVectorDrawableCompat 的实例 inEditMode - 只是我的 bool 标志对不起，但现在我没有时间用 Java 编写它，但有问题可以自由提问