如何在AppCompat中将操作栏标题作为TextView获取?

时间:2015-07-09 13:23:01

标签: android

我正在尝试将此标题作为TextView获取,但它不起作用:

TextView title = (TextView) findViewById(R.id.action_bar_title);

标题为空。如何使用AppCompat将标题作为TextView获取?

5 个答案:

答案 0 :(得分:5)

通常在我的情况下使用工具栏时,如果我正在使用标题进行自定义操作,我将手动膨胀标题视图,然后在XML中设置其属性。工具栏的目的是防止这样的事情发生,这样你就可以更好地控制工具栏的样子

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/my_awesome_toolbar"
    android:layout_height="@dimen/standard_vertical_increment"
    android:layout_width="match_parent"
    android:minHeight="@dimen/standard_vertical_increment"
    android:background="@drawable/actionbar_background">


    <TextView
        style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
        android:id="@+id/toolbar_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/Red" />

</android.support.v7.widget.Toolbar>

然后在代码中,你会做这样的事情:

Toolbar toolbar = findViewById(R.id.my_awesome_toolbar);
//Get rid of the title drawn by the toolbar automatically
toolbar.setTitle("");
TextView toolbarTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);
toolbarTitle.setTextColor(Color.BLUE);

取自Getting ActionBar Title TextView with AppCompat v7 r21

答案 1 :(得分:3)

蛮力似乎是一种解决方案:

private void findTextViewTitle() {        
    String title = "title";

    ActionBar ab = getSupportActionBar();
    ab.setTitle(title);

    Window window = getWindow();
    View decor = window.getDecorView();

    ArrayList<View> views = new ArrayList<View>();
    decor.findViewsWithText(views, title, View.FIND_VIEWS_WITH_TEXT);

    for (View view : views) {
        Log.d(TAG, "view " + view.toString());
    }

    TextView tvTitle = (TextView) decor.findViewById(views.get(0).getId());
    tvTitle.setBackgroundColor(Color.RED);

}

答案 2 :(得分:0)

这里是如何从ActionBar获取TextView的方法。即使ActionBar方向更改,此方法也可以确保选择TextView。如果需要,它还允许您获取图标-只需检查ImageView的子实例即可。

//If you just want to set the text
ActionBar actBar = getSupportActionBar();
if(actBar != null) {
    actBar.setTitle(R.string.your_ab_title);
}

//If you want to customize more than the text    
Toolbar ab = findViewById(R.id.action_bar);
if(ab != null){
    for (int i= 0; i < ab.getChildCount(); i++){            
        if(ab.getChildAt(i) instanceof TextView) {
            TextView title = (TextView) ab.getChildAt(i);

            //You now have the title textView. Do something with it
            title.setText("Your Custom AB Title");
        }
     }
}

答案 3 :(得分:0)

嘿,谢谢大家的帮助,这是我最终得到的实现。

Example Font Set

// USAGE
Toolbar yourToolbar = (Toolbar) findViewById(R.id.your_toolbar);
TextView actionTitle = ActionBarTitle(toolbar);
    actionTitle.setTypeface(font("Snake"));


// IMPLEMENTATION
private TextView ActionBarTitle(Toolbar toolbarForRead)
{
    TextView title = null;
    if (toolbarForRead != null)
    {
        for (int i= 0; i < toolbarForRead.getChildCount(); i++)
        {            
            if (toolbarForRead.getChildAt(i) instanceof 
TextView)
            {
                title = (TextView) 
toolbarForRead.getChildAt(i);
                return title;
            }
        }
    }
    return null;
}
private Typeface font(String fontName)
{
    return Typeface.createFromAsset(this.getAssets(), "fonts/"  + fontName + ".ttf");
}

答案 4 :(得分:0)

我使用AppCompatActivity,这对我有用

val titleId :Int = resources.getIdentifier("title","id",BuildConfig.APPLICATION_ID )
        val title :TextView = findViewById(titleId)

Layout Inspector