仿ios状态栏颜色和标题栏颜色一致的实例代码

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.view.View;
import android.view.ViewGroup;

public class StatusBarCompat {
 private static final int INVALID_VAL = -1;
 //判断版本
 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
 public static View compat(Activity activity, int statusColor) {
  //默认颜色
  int color = ContextCompat.getColor(activity, R.color.colorPrimaryDark);
  //若果版本大于等于21 给状态栏设置颜色
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   if (statusColor != INVALID_VAL) {
    color = statusColor;
   }
   activity.getWindow().setStatusBarColor(color);
   return null;
  }
  //如果版本在大于等于19小于21
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT
    && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
   //获取contentView
   ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);
   if (statusColor != INVALID_VAL) {
    color = statusColor;
   }
   //获取contentView里的第一个view 也就是状态栏
   View statusBarView = contentView.getChildAt(0);
   if (statusBarView != null && statusBarView.getMeasuredHeight() == getStatusBarHeight(activity)) {
    statusBarView.setBackgroundColor(color);
    return statusBarView;
   }

   statusBarView = new View(activity);
   ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
     getStatusBarHeight(activity));
   statusBarView.setBackgroundColor(color);
   contentView.addView(statusBarView, lp);
   return statusBarView;
  }
  return null;
 }
 public static void compat(Activity activity) {
  compat(activity, INVALID_VAL);
 }
 public static int getStatusBarHeight(Context context) {
  int result = 0;
  int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
  if (resourceId > 0) {
   result = context.getResources().getDimensionPixelSize(resourceId);
  }
  return result;
 }
}

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.os.Build;
import android.view.WindowManager;
public class MainActivity extends AppCompatActivity {
 protected boolean statusBarCompat = true;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  if (statusBarCompat) {
   StatusBarCompat.compat(this, ContextCompat.getColor(this, R.color.colorPrimary));
   transparent19and20();
  }
 }
 protected void transparent19and20() {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT
    && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
   getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
  }
 }
}