Android4.4实现状态栏沉浸

所谓的状态栏沉浸就是要实现一种改变设备的状态栏颜色，从而实现其与我们的app风格一致的效果,属于美化UI的范畴—–by 熊猫卓 20151122

实现

-1.布局
先说布局，要实现状态栏的沉浸效果，首先需要在你的布局文件中加入以下属性

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

关键该属性要加在布局文件最上边的控件中，即距离状态栏最近的控件。在实际博主并不纯熟的使用过程中发现，有的情况下布局文件最外层的控件也要加行这个属性才好使。接下来解释下两个属性的意义
android:clipToPadding=”true”字面意思理解就可以了设置要存在padding。android:fitsSystemWindows=”true”同样字面意思理解即可，调整系统布局适应自己的布局。
-2.Java实现
public static void initSystemBar(Activity activity) {

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {setTranslucentStatus(activity, true);}SystemBarTintManager tintManager = new SystemBarTintManager(activity);tintManager.setStatusBarTintEnabled(true);// 使用颜色资源tintManager.setStatusBarTintResource(R.color.status_color);}

补充设置状态栏的颜色同样还可以使用
// set a custom tint color for all system bars
tintManager.setTintColor(Color.parseColor(“#99000FF”));
// set a custom navigation bar resource
tintManager.setNavigationBarTintResource(R.drawable.my_tint);
// set a custom status bar drawable
tintManager.setStatusBarTintDrawable(MyDrawable);

啰嗦一句，沉浸状态栏的使用必须是基于android adk19及以上版本的，其他版本是没有改效果的。但沉浸也不是随便用的，比如设置了activity全屏模式的时候那么你就没有必要再去设置状态栏颜色了。

下面是工具类来自开元项目
状态栏沉浸
/*
* Copyright (C) 2013 readyState Software Ltd
*
* Licensed under the Apache License, Version 2.0 (the “License”);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.boyuyun.applib;import android.annotation.SuppressLint;import android.annotation.TargetApi;import android.app.Activity;import android.content.Context;import android.content.res.Configuration;import android.content.res.Resources;import android.content.res.TypedArray;import android.graphics.drawable.Drawable;import android.os.Build;import android.util.DisplayMetrics;import android.util.TypedValue;import android.view.Gravity;import android.view.View;import android.view.ViewConfiguration;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;import android.widget.FrameLayout.LayoutParams;import java.lang.reflect.Method;/** * Class to manage status and navigation bar tint effects when using KitKat  * translucent system UI modes. * */        public class SystemBarTintManager {static {    // Android allows a system property to override the presence of the navigation bar.    // Used by the emulator.    // See https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {        try {            Class c = Class.forName("android.os.SystemProperties");            Method m = c.getDeclaredMethod("get", String.class);            m.setAccessible(true);            sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");        } catch (Throwable e) {            sNavBarOverride = null;        }    }}/** * The default system bar tint color value. */public static final int DEFAULT_TINT_COLOR = 0x99000000;private static String sNavBarOverride;private final SystemBarConfig mConfig;private boolean mStatusBarAvailable;private boolean mNavBarAvailable;private boolean mStatusBarTintEnabled;private boolean mNavBarTintEnabled;private View mStatusBarTintView;private View mNavBarTintView;/** * Constructor. Call this in the host activity onCreate method after its * content view has been set. You should always create new instances when * the host activity is recreated. * * @param activity The host activity. */@TargetApi(19)public SystemBarTintManager(Activity activity) {    Window win = activity.getWindow();    ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {        // check theme attrs        int[] attrs = {android.R.attr.windowTranslucentStatus,                android.R.attr.windowTranslucentNavigation};        TypedArray a = activity.obtainStyledAttributes(attrs);        try {            mStatusBarAvailable = a.getBoolean(0, false);            mNavBarAvailable = a.getBoolean(1, false);        } finally {            a.recycle();        }        // check window flags        WindowManager.LayoutParams winParams = win.getAttributes();        int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;        if ((winParams.flags & bits) != 0) {            mStatusBarAvailable = true;        }        bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;        if ((winParams.flags & bits) != 0) {            mNavBarAvailable = true;        }    }    mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);    // device might not have virtual navigation keys    if (!mConfig.hasNavigtionBar()) {        mNavBarAvailable = false;    }    if (mStatusBarAvailable) {        setupStatusBarView(activity, decorViewGroup);    }    if (mNavBarAvailable) {        setupNavBarView(activity, decorViewGroup);    }}/** * Enable tinting of the system status bar. * * If the platform is running Jelly Bean or earlier, or translucent system * UI modes have not been enabled in either the theme or via window flags, * then this method does nothing. * * @param enabled True to enable tinting, false to disable it (default). */public void setStatusBarTintEnabled(boolean enabled) {    mStatusBarTintEnabled = enabled;    if (mStatusBarAvailable) {        mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);    }}/** * Enable tinting of the system navigation bar. * * If the platform does not have soft navigation keys, is running Jelly Bean * or earlier, or translucent system UI modes have not been enabled in either * the theme or via window flags, then this method does nothing. * * @param enabled True to enable tinting, false to disable it (default). */public void setNavigationBarTintEnabled(boolean enabled) {    mNavBarTintEnabled = enabled;    if (mNavBarAvailable) {        mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);    }}/** * Apply the specified color tint to all system UI bars. * * @param color The color of the background tint. */public void setTintColor(int color) {    setStatusBarTintColor(color);    setNavigationBarTintColor(color);}/** * Apply the specified drawable or color resource to all system UI bars. * * @param res The identifier of the resource. */public void setTintResource(int res) {    setStatusBarTintResource(res);    setNavigationBarTintResource(res);}/** * Apply the specified drawable to all system UI bars. * * @param drawable The drawable to use as the background, or null to remove it. */public void setTintDrawable(Drawable drawable) {    setStatusBarTintDrawable(drawable);    setNavigationBarTintDrawable(drawable);}/** * Apply the specified alpha to all system UI bars. * * @param alpha The alpha to use */public void setTintAlpha(float alpha) {    setStatusBarAlpha(alpha);    setNavigationBarAlpha(alpha);}/** * Apply the specified color tint to the system status bar. * * @param color The color of the background tint. */public void setStatusBarTintColor(int color) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundColor(color);    }}/** * Apply the specified drawable or color resource to the system status bar. * * @param res The identifier of the resource. */public void setStatusBarTintResource(int res) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundResource(res);    }}/** * Apply the specified drawable to the system status bar. * * @param drawable The drawable to use as the background, or null to remove it. */@SuppressWarnings("deprecation")public void setStatusBarTintDrawable(Drawable drawable) {    if (mStatusBarAvailable) {        mStatusBarTintView.setBackgroundDrawable(drawable);    }}/** * Apply the specified alpha to the system status bar. * * @param alpha The alpha to use */@TargetApi(11)public void setStatusBarAlpha(float alpha) {    if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {        mStatusBarTintView.setAlpha(alpha);    }}/** * Apply the specified color tint to the system navigation bar. * * @param color The color of the background tint. */public void setNavigationBarTintColor(int color) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundColor(color);    }}/** * Apply the specified drawable or color resource to the system navigation bar. * * @param res The identifier of the resource. */public void setNavigationBarTintResource(int res) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundResource(res);    }}/** * Apply the specified drawable to the system navigation bar. * * @param drawable The drawable to use as the background, or null to remove it. */@SuppressWarnings("deprecation")public void setNavigationBarTintDrawable(Drawable drawable) {    if (mNavBarAvailable) {        mNavBarTintView.setBackgroundDrawable(drawable);    }}/** * Apply the specified alpha to the system navigation bar. * * @param alpha The alpha to use */@TargetApi(11)public void setNavigationBarAlpha(float alpha) {    if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {        mNavBarTintView.setAlpha(alpha);    }}/** * Get the system bar configuration. * * @return The system bar configuration for the current device configuration. */public SystemBarConfig getConfig() {    return mConfig;}/** * Is tinting enabled for the system status bar? * * @return True if enabled, False otherwise. */public boolean isStatusBarTintEnabled() {    return mStatusBarTintEnabled;}/** * Is tinting enabled for the system navigation bar? * * @return True if enabled, False otherwise. */public boolean isNavBarTintEnabled() {    return mNavBarTintEnabled;}private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {    mStatusBarTintView = new View(context);    LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());    params.gravity = Gravity.TOP;    if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {        params.rightMargin = mConfig.getNavigationBarWidth();    }    mStatusBarTintView.setLayoutParams(params);    mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);    mStatusBarTintView.setVisibility(View.GONE);    decorViewGroup.addView(mStatusBarTintView);}private void setupNavBarView(Context context, ViewGroup decorViewGroup) {    mNavBarTintView = new View(context);    LayoutParams params;    if (mConfig.isNavigationAtBottom()) {        params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());        params.gravity = Gravity.BOTTOM;    } else {        params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);        params.gravity = Gravity.RIGHT;    }    mNavBarTintView.setLayoutParams(params);    mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);    mNavBarTintView.setVisibility(View.GONE);    decorViewGroup.addView(mNavBarTintView);}/** * Class which describes system bar sizing and other characteristics for the current * device configuration. * */public static class SystemBarConfig {    private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";    private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";    private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";    private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";    private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";    private final boolean mTranslucentStatusBar;    private final boolean mTranslucentNavBar;    private final int mStatusBarHeight;    private final int mActionBarHeight;    private final boolean mHasNavigationBar;    private final int mNavigationBarHeight;    private final int mNavigationBarWidth;    private final boolean mInPortrait;    private final float mSmallestWidthDp;    private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {        Resources res = activity.getResources();        mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);        mSmallestWidthDp = getSmallestWidthDp(activity);        mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);        mActionBarHeight = getActionBarHeight(activity);        mNavigationBarHeight = getNavigationBarHeight(activity);        mNavigationBarWidth = getNavigationBarWidth(activity);        mHasNavigationBar = (mNavigationBarHeight > 0);        mTranslucentStatusBar = translucentStatusBar;        mTranslucentNavBar = traslucentNavBar;    }    @TargetApi(14)    private int getActionBarHeight(Context context) {        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            TypedValue tv = new TypedValue();            context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);            result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());        }        return result;    }    @TargetApi(14)    private int getNavigationBarHeight(Context context) {        Resources res = context.getResources();        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            if (hasNavBar(context)) {                String key;                if (mInPortrait) {                    key = NAV_BAR_HEIGHT_RES_NAME;                } else {                    key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;                }                return getInternalDimensionSize(res, key);            }        }        return result;    }    @TargetApi(14)    private int getNavigationBarWidth(Context context) {        Resources res = context.getResources();        int result = 0;        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {            if (hasNavBar(context)) {                return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);            }        }        return result;    }    @TargetApi(14)    private boolean hasNavBar(Context context) {        Resources res = context.getResources();        int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool", "android");        if (resourceId != 0) {            boolean hasNav = res.getBoolean(resourceId);            // check override flag (see static block)            if ("1".equals(sNavBarOverride)) {                hasNav = false;            } else if ("0".equals(sNavBarOverride)) {                hasNav = true;            }            return hasNav;        } else { // fallback            return !ViewConfiguration.get(context).hasPermanentMenuKey();        }    }    private int getInternalDimensionSize(Resources res, String key) {        int result = 0;        int resourceId = res.getIdentifier(key, "dimen", "android");        if (resourceId > 0) {            result = res.getDimensionPixelSize(resourceId);        }        return result;    }    @SuppressLint("NewApi")    private float getSmallestWidthDp(Activity activity) {        DisplayMetrics metrics = new DisplayMetrics();        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {            activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);        } else {            // TODO this is not correct, but we don't really care pre-kitkat            activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);        }        float widthDp = metrics.widthPixels / metrics.density;        float heightDp = metrics.heightPixels / metrics.density;        return Math.min(widthDp, heightDp);    }    /**     * Should a navigation bar appear at the bottom of the screen in the current     * device configuration? A navigation bar may appear on the right side of     * the screen in certain configurations.     *     * @return True if navigation should appear at the bottom of the screen, False otherwise.     */    public boolean isNavigationAtBottom() {        return (mSmallestWidthDp >= 600 || mInPortrait);    }    /**     * Get the height of the system status bar.     *     * @return The height of the status bar (in pixels).     */    public int getStatusBarHeight() {        return mStatusBarHeight;    }    /**     * Get the height of the action bar.     *     * @return The height of the action bar (in pixels).     */    public int getActionBarHeight() {        return mActionBarHeight;    }    /**     * Does this device have a system navigation bar?     *     * @return True if this device uses soft key navigation, False otherwise.     */    public boolean hasNavigtionBar() {        return mHasNavigationBar;    }    /**     * Get the height of the system navigation bar.     *     * @return The height of the navigation bar (in pixels). If the device does not have     * soft navigation keys, this will always return 0.     */    public int getNavigationBarHeight() {        return mNavigationBarHeight;    }    /**     * Get the width of the system navigation bar when it is placed vertically on the screen.     *     * @return The width of the navigation bar (in pixels). If the device does not have     * soft navigation keys, this will always return 0.     */    public int getNavigationBarWidth() {        return mNavigationBarWidth;    }    /**     * Get the layout inset for any system UI that appears at the top of the screen.     *     * @param withActionBar True to include the height of the action bar, False otherwise.     * @return The layout inset (in pixels).     */    public int getPixelInsetTop(boolean withActionBar) {        return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);    }    /**     * Get the layout inset for any system UI that appears at the bottom of the screen.     *     * @return The layout inset (in pixels).     */    public int getPixelInsetBottom() {        if (mTranslucentNavBar && isNavigationAtBottom()) {            return mNavigationBarHeight;        } else {            return 0;        }    }    /**     * Get the layout inset for any system UI that appears at the right of the screen.     *     * @return The layout inset (in pixels).     */    public int getPixelInsetRight() {        if (mTranslucentNavBar && !isNavigationAtBottom()) {            return mNavigationBarWidth;        } else {            return 0;        }    }}}