沉浸式设计

Android 4.4(19)设置沉浸式状态栏
1、通过主题的方式

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
     <!--设置沉浸式状态栏-->
    <item name="android:windowTranslucentStatus">true</item>
    <!--虚拟导航栏-->
    <item name="android:windowTranslucentNavigation">true</item>
</style>

2、通过代码的方式设置

//设置沉浸式状态栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
//设置虚拟导航栏
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);      

Android 5.0(21)以上设置沉浸式状态栏
1、通过主题设置状态栏的颜色

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <!--修改状态栏的颜色状态栏-->
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>
</resources>

没有达到我们想要的效果，是因为我们还需要设置全屏。下面我们通过代码的方式实现。

2、通过代码的方式

Window window = getWindow();
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
//设置状态栏颜色透明
window.setStatusBarColor(Color.TRANSPARENT);

int visibility = window.getDecorView().getSystemUiVisibility();
//布局内容全屏展示
visibility |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
//隐藏虚拟导航栏
visibility |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
//防止内容区域大小发生变化
visibility |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
window.getDecorView().setSystemUiVisibility(visibility);

沉浸式状态栏适配Toolbar

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        immersive();
        setHeightAndPadding(this, findViewById(R.id.toolbar));
    }

    private void immersive() {
        //安卓4.4之前没有不支持沉浸式状态栏
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            return;
        }

        //安卓5.0及之后的版本设置沉浸式状态栏
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Window window = getWindow();
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            //设置状态栏颜色透明
            window.setStatusBarColor(Color.TRANSPARENT);

            int visibility = window.getDecorView().getSystemUiVisibility();
            //布局内容全屏展示
            visibility |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
            //隐藏虚拟导航栏
            visibility |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
            //防止内容区域大小发生变化
            visibility |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE;

            window.getDecorView().setSystemUiVisibility(visibility);
        } else {
            //安卓5.0及之后的版本设置沉浸式状态栏
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        }

    }

    public int getStatusBarHeight(Context context) {
        int resId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resId > 0) {
            return context.getResources().getDimensionPixelSize(resId);
        }
        return 0;
    }

    public void setHeightAndPadding(Context context, View view) {
        ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
        layoutParams.height += getStatusBarHeight(context);
        view.setPadding(view.getPaddingLeft(), view.getPaddingTop() + getStatusBarHeight(context), view.getPaddingRight(), view.getPaddingBottom());
    }
}