Android 设置背景操作栏的渐变

我尝试为背景操作栏设置渐变，但背景与父操作栏不匹配

下面是代码梯度和操作栏

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在res/drawable/mygradient.xml中创建GradientDrawable

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

    <gradient
        android:angle="360"
        android:centerColor="@color/color2"
        android:endColor="@color/color3"
        android:startColor="@color/color1"
        android:type="linear" />

</shape>

有关v7库的支持（您的案例）：

---

在res/drawable/mygradient.xml中创建GradientDrawable

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

    <gradient
        android:angle="360"
        android:centerColor="@color/color2"
        android:endColor="@color/color3"
        android:startColor="@color/color1"
        android:type="linear" />

</shape>

有关v7库的支持（您的案例）：

public class MainActivity extends AppCompatActivity {
DrawerLayout drawer;
private TabLayout tabLayout;
private ViewPager viewPager;
Toolbar toolbar;
TextView tvName;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    tvName = (TextView) toolbar.findViewById(R.id.toolbar_title);
    drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    viewPager = (ViewPager)findViewById(R.id.viewpager);
    setupViewPager(viewPager);
    tabLayout = (TabLayout)findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
    getSupportActionBar().setCustomView(R.layout.actionbar_layout);
}

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

    <gradient
        android:angle="360"
        android:centerColor="@color/color2"
        android:endColor="@color/color3"
        android:startColor="@color/color1"
        android:type="linear" />

</shape>

ActionBar actionBar = getActionBar();    
actionBar.setBackgroundDrawable(getResources().getDrawable(R.drawable.mygradient));

// make sure to import android.support.v7.app.ActionBar
ActionBar actionBar = getSupportActionBar();        
actionBar.setBackgroundDrawable(getResources().getDrawable(R.drawable.mygradient));