android 实现透明状态栏

// 修改状态栏颜色，4.4+生效
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            setTranslucentStatus();
        }
        SystemBarTintManager tintManager = new SystemBarTintManager(this);
        tintManager.setStatusBarTintEnabled(true);
        tintManager.setStatusBarTintResource(R.color.status_bar_bg);//通知栏所需颜色，颜色内容在colors.xml文件里面定义

@TargetApi(19)
    protected void setTranslucentStatus() {
        Window window = getWindow();
        // Translucent status bar
        window.setFlags(
                WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
                WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        // Translucent navigation bar
        window.setFlags(
                WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION,
                WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
    }

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#f1f1f1"
    android:clipToPadding="true"
    android:fitsSystemWindows="true" >