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  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