Android 4.4以降ステータスバーの色を設定

前置条件:Android開発パッケージ4.4以上レイアウトを作成する:レイアウトファイル

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.cn.statusbar.MainActivity" >

    <View  android:id="@+id/statusBarBackground1" android:layout_width="match_parent" android:layout_height="wrap_content" android:visibility="gone" />

</RelativeLayout>

ステップ2:Activityの作成

package com.cn.statusbar;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

@SuppressLint("InlinedApi")
public class MActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setStatusBarColor(findViewById(R.id.statusBarBackground),getResources().getColor(android.R.color.white));
    }

    public void setStatusBarColor(View statusBar,int color){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
               Window w = getWindow();
               w.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
               //status bar height
               int actionBarHeight = getActionBarHeight();
               int statusBarHeight = getStatusBarHeight();
               //action bar height
               statusBar.getLayoutParams().height = actionBarHeight + statusBarHeight;
               statusBar.setBackgroundColor(color);
         }
    }

    public int getActionBarHeight() {
        int actionBarHeight = 0;
        TypedValue tv = new TypedValue();
        if (getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
        {
           actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
        }
        return actionBarHeight;
    }

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

OKコードを見れば意味がわかります