改变Android状态栏的背景statusBar(Kotlin)

状态栏的背景两种设置方式

1.设置为全透明（andorid6.0以上支持），参考郭霖大神的博客即可：http://blog.csdn.net/guolin_blog/article/details/51763825

2.设置状态栏背景颜色，主要参考鸿洋大神的：http://blog.csdn.net/lmj623565791/article/details/48649563

看第二篇的时候略感难解，且不知为何源码我无法运行，略加改动，且转换为Kotlin

最终效果从左至右版本依次是 Android4.4以下 Android4.4-5.0 Android5.0以上

改变Android状态栏的背景statusBar(Kotlin)

实现原理：Android4.4以下无法实现 Android4.4-5.0设置半透明，且设置颜色 Android5.0以上直接设置背景色

values/styles.xml

<resources>

    <style name="BaseAppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/primary</item>
        <item name="colorPrimaryDark">@color/primary_dark</item>
        <item name="colorAccent">#FF4081</item>
    </style>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="@style/BaseAppTheme">
    </style>

</resources>

values-v19/styles.xml

<resources>

    <style name="AppTheme" parent="@style/BaseAppTheme">
        <item name="android:windowTranslucentStatus">true</item>
    </style>
</resources>

values-v21/styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="@style/BaseAppTheme">
    </style>
</resources>

color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>

    <color name="primary">#FF03A9F4</color>
    <color name="primary_dark">#FF0288D1</color>
    <color name="status_bar_color">@color/primary_dark</color>
</resources>

acticity-main.xml :注意里边fitsSystemWindows属性的位置是在最外层设置的

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:fitsSystemWindows="true"
    >

    <TextView
        android:id="@+id/id_toolbar"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:background="?attr/colorPrimary"
        android:visibility="visible"
        android:text="标题"
        android:gravity="center"
        android:textSize="24sp"
        />


    <TextView
        android:id="@+id/id_tv_content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:gravity="center"
        android:text="HelloWorld"
        android:textSize="30sp"/>

</LinearLayout>

package com.example.minlewan.teststatusbar


import android.app.Activity
import android.view.ViewGroup
import android.os.Build
import android.annotation.TargetApi
import android.content.Context
import android.graphics.Color
import android.graphics.Color.parseColor
import android.view.View


object StatusBarCompat {
    private val INVALID_VAL = -1
    private val COLOR_DEFAULT = Color.parseColor("#20000000")

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    fun compat(activity: Activity, statusColor: Int) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            if (statusColor != INVALID_VAL) {
                activity.window.statusBarColor = statusColor
            }
            return
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            var color = COLOR_DEFAULT
            val contentView = activity.findViewById<View>(android.R.id.content) as ViewGroup
            if (statusColor != INVALID_VAL) {
                color = statusColor
            }
            val statusBarView = View(activity)
            val lp = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    getStatusBarHeight(activity))
            statusBarView.setBackgroundColor(color)
            contentView.addView(statusBarView, lp)
        }

    }

    fun compat(activity: Activity) {
        compat(activity, INVALID_VAL)
    }


    fun getStatusBarHeight(context: Context): Int {
        var result = 0
        val resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android")
        if (resourceId > 0) {
            result = context.getResources().getDimensionPixelSize(resourceId)
        }
        return result
    }
}

MainActivity

class MainActivity : AppCompatActivity() {

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        StatusBarCompat.compat(this, ContextCompat.getColor(this, R.color.colorAccent))

    }

对的，只要上边都配置好了，只需添加一句话 StatusBarCompat.compat（）即可设置颜色

无意要分，选择了最少的2分

csdn代码地址：http://download.csdn.net/download/minle_/10217894

github求顺手给个星星，不给也理解。毕竟简单

github地址：https://github.com/WanMinle/-statusbar-

改变Android状态栏的背景statusBar(Kotlin)

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