工具欄後退箭頭在4.x設備上顯示爲黑色

Question

我已經使用工具欄和使用過的設計庫。工具欄導航圖標和後退箭頭圖標在Android 5.0設備上顯示爲白色，但在Android 4.x設備上顯示爲黑色圖標。如何在Android 5.0和Android 4.x設備上將圖標顯示爲白色。

MainActivity.java

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

    Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar); 


    final Drawable upArrow = getResources().getDrawable(R.drawable.abc_ic_ab_back_mtrl_am_alpha); 

    upArrow.setColorFilter(getResources().getColor(android.R.color.white), PorterDuff.Mode.SRC_ATOP); 

    toolbar.setNavigationIcon(upArrow); 

    setSupportActionBar(toolbar); 

    mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout); 

    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,toolbar, R.string.app_name, R.string.app_name){ 

     @Override 
     public void onDrawerClosed(View drawerView) { 
      super.onDrawerClosed(drawerView); 
      fab1.setVisibility(View.VISIBLE); 
     } 

     @Override 
     public void onDrawerOpened(View drawerView) { 
      super.onDrawerOpened(drawerView); 
      fab1.setVisibility(View.GONE); 
     } 
    }; 
    mDrawerLayout.setDrawerListener(mDrawerToggle); 

    NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view); 
    navigationView.setNavigationItemSelectedListener(this); 
} 

@Override 
protected void onPostCreate(Bundle savedInstanceState) { 
    super.onPostCreate(savedInstanceState); 
    mDrawerToggle.syncState(); /* if comment this line white color applied,but only arrow displayed,not display nav icon(three line icon)*/ 
} 


@Override 
public void onConfigurationChanged(Configuration newConfig) { 
    super.onConfigurationChanged(newConfig); 
    mDrawerToggle.onConfigurationChanged(newConfig); 
} 

toolbar.xml

<?xml version="1.0" encoding="utf-8"?> 
<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/toolbar" 
    android:layout_width="match_parent" 
    android:layout_height="?attr/actionBarSize" 
    android:background="?attr/colorPrimary" 
    android:minHeight="?attr/actionBarSize" 
    app:popupTheme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
    app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
    app:titleTextAppearance="@style/AppTheme.Toolbar.Title" 
    app:elevation="@dimen/cardview_default_elevation" 
    app:borderWidth="0dp" 
    > 

值\ styles.xml

<style name="AppTheme.Toolbar.Title" parent="TextAppearance.Widget.AppCompat.Toolbar.Title"> 
     <!-- Set proper title size --> 
     <item name="android:textSize">@dimen/abc_text_size_title_material_toolbar</item> 
     <!-- Set title color --> 
     <item name="android:textColor">@color/toolbar_title</item> 
</style> 

個值-V21 \ styles.xml

<style name="AppTheme.Toolbar.Title" parent="TextAppearance.Widget.AppCompat.Toolbar.Title"> 
     <!-- Set proper title size --> 
     <item name="android:textSize">@dimen/abc_text_size_title_material_toolbar</item> 
     <!-- Set title color --> 
     <item name="android:textColor">@color/toolbar_title</item> 
</style> 

Answer 1

你已經張貼了答案:)

//final Drawable upArrow = getResources().getDrawable(R.drawable.abc_ic_ab_back_mtrl_am_alpha); 

    //upArrow.setColorFilter(getResources().getColor(android.R.color.white), PorterDuff.Mode.SRC_ATOP); 

    //toolbar.setNavigationIcon(upArrow); 

這是作品。測試4.4.2

我覺得你有這麼多的嘗試，有混亂。