第一步写一个基类继承AppCompatActivity

第二步这个类里面写一个方法

如图下面代码所示

public abstract class BaseActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //设置状态栏透明        setT();        setContentView(setLayout());    }    private void setT() {        getWindow().requestFeature(Window.FEATURE_NO_TITLE);        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {            Window window = getWindow();            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS                    | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);            window.setStatusBarColor(Color.TRANSPARENT);            window.setNavigationBarColor(Color.TRANSPARENT);        }    }    public abstract int  setLayout();}

<style name="TranslucentTheme" parent="Theme.AppCompat.Light.NoActionBar">    <item name="android:windowTranslucentStatus">falseitem>    <item name="android:windowTranslucentNavigation">trueitem>        <item name="android:statusBarColor">@android:color/transparentitem>style>

android:theme="@style/TranslucentTheme">