Android沉浸式布局

基于android的沉浸式app设计，直接植入项目即可完成

//设置状态栏的透明属性
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);


        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {//5.0 全透明实现
            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_STABLE
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.setStatusBarColor(Color.TRANSPARENT);
            window.setNavigationBarColor(Color.TRANSPARENT);
        }

但是有一种情况会导致设计失效，在ScrollView中嵌套EditText会导致状态栏拉伸，十分影响体验，这时候就需要手动设置状态栏高度来解决,通过反射来获取状态栏高度，从而进一步设置ToolBar

<android.support.v7.widget.Toolbar
        android:id="@+id/toolBar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"/>

/**
     * <!-- Height of the status bar -->
     * <dimen name="status_bar_height">24dp</dimen>
     * <!-- Height of the bottom navigation / system bar. -->
     * <dimen name="navigation_bar_height">48dp</dimen>
     * 反射手机运行的类：android.R.dimen.status_bar_height.
     */
    private int getStatusBarHeight(Context context) {
        int statusHeight = -1;
        try {
            @SuppressLint("PrivateApi") Class<?> clazz = Class.forName("com.android.internal.R$dimen");
            Object object = clazz.newInstance();
            String status_bar_height = clazz.getField("status_bar_height").get(object).toString();
            int height = Integer.parseInt(status_bar_height);
            //dp -> px
            statusHeight = context.getResources().getDimensionPixelSize(height);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return statusHeight;
    }

        toolbar = findViewById(R.id.toolBar);

        LayoutParams layoutParams = toolbar.getLayoutParams();
        layoutParams.height += getStatusBarHeight(this);
        toolbar.setLayoutParams(layoutParams);

        toolbar.setPadding(
                toolbar.getPaddingLeft(),
                toolbar.getPaddingTop()+getStatusBarHeight(this),
                toolbar.getPaddingRight(),
                toolbar.getPaddingBottom());