让手机状态栏随心所欲的改变颜色，即android的沉浸式状态栏

方法一：这种方法只是让状态栏透明化了，状态栏颜色跟所在的跟布局背景色一致。不能设置随心所欲的颜色；首先：在styles里面添加它的主题

<style name="AppBaseTheme" parent="android:Theme.Holo.Light.NoActionBar.TranslucentDecor" >
<!--<item name="android:windowTranslucentNavigation">true</item>-->
<item name="android:windowTranslucentStatus">true</item>
</style>

然后：在androidManifest里在添加主题

<activity
android:name=".customDialog.MyDialogActivity"
android:theme="@style/AppBaseTheme"
/>

最后：在跟布局里面添加两行代码，

android:clipToPadding="true"

android:fitsSystemWindows="true"

如果没有这两行代码，你会发现布局文件跟我们的状态栏挤到一块，所有不能少。到这里，状态栏的颜色就和跟布局颜色一致了，不过这些功能都要在android4.4以上才能出效果；或者，也可以直接在代码设置，就可以不写上的styles了，直接写上下面这两行代码：

<pre name="code" class="html">       //透明状态栏

// getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

// //透明导航栏// getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);

这里还是要加这两行代码的

android:clipToPadding="true"android:fitsSystemWindows="true"

方法二：这个状态栏颜色不受跟布局背景色的影响，状态栏跟ToolBar栏的颜色，有个渐变的效果；首先，先贴一个关于判断兼容性的类，因为要用到，很简单

public class StatusBarCompat{private static final int INVALID_VAL = -1;private static final int COLOR_DEFAULT = Color.parseColor("#20000000");@TargetApi(Build.VERSION_CODES.LOLLIPOP)public static void compat(Activity activity, int statusColor){if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){if (statusColor != INVALID_VAL){activity.getWindow().setStatusBarColor(statusColor);}return;}if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP){int color = COLOR_DEFAULT;ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);if (statusColor != INVALID_VAL){color = statusColor;}View statusBarView = contentView.getChildAt(0);//改变颜色时避免重复添加statusBarViewif (statusBarView != null && statusBarView.getMeasuredHeight() == getStatusBarHeight(activity)){statusBarView.setBackgroundColor(color);return;}statusBarView = new View(activity);ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,getStatusBarHeight(activity));statusBarView.setBackgroundColor(color);contentView.addView(statusBarView, lp);}}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;}}

然后:在styles里设置

<style name="BaseAppTheme" parent="Theme.AppCompat.Light.NoActionBar"><!-- Customize your theme here. --><!--<item name="colorPrimary">@color/primary</item>//ToolBar颜色--><!--<item name="colorPrimaryDark">@color/primary_dark</item>//状态栏颜色--><!--<item name="colorAccent">#FF4081</item>//字体颜色--><item name="colorPrimary">@android:color/holo_red_dark</item>//ToolBar颜色<item name="colorPrimaryDark">@android:color/holo_red_dark</item>//状态栏颜色<item name="colorAccent">#FF4081</item></style>

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

在然后在androidMainifest里

 <activity android:name=".SteepBar.SteepBarActivity"android:theme="@style/AppSteepTheme"/>

然后：启动的activity代码如下

public class SteepBarActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_steepbaractivity);Toolbar toolbar = (Toolbar) findViewById(R.id.id_toolbar);setSupportActionBar(toolbar);//       StatusBarCompat.compat(this, 0xFFFF0000);//       StatusBarCompat.compat(this,getResources().getColor(R.color.primary_dark));StatusBarCompat.compat(this);}}

最后xml文件：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"android:id="@+id/id_main_content"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><android.support.v7.widget.Toolbarandroid:id="@+id/id_toolbar"android:layout_width="match_parent"android:layout_height="wrap_content"android:background="?attr/colorPrimary"android:fitsSystemWindows="true"android:clipToPadding="true"app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /><TextViewandroid: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>