? ? 我們知道IOS上的應用。狀態(tài)欄的顏色總能與應用標題欄顏色保持一致，用戶體驗非常不錯。那安卓能否夠呢？若是在安卓4.4之前，答案是否定的，但在4.4之后，谷歌同意開發(fā)人員自己定義狀態(tài)欄背景顏色啦，這是個不錯的體驗！

若你手機上安裝有最新版的qq，而且你的安卓SDK版本號是4.4及以上。你能夠看下它的效果：

實現(xiàn)此功能有兩種方法：

1.在xml中設置主題或自己定義style。

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

鑒于市面上各種手機的SDK的各種版本號，不建議採用這樣的方法；

2.在代碼中控制；

能夠首先創(chuàng)建一個BaseActivity。在onCreate方法中進行處理：

@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { setTranslucentStatus(true); SystemBarTintManager tintManager = new SystemBarTintManager(this); tintManager.setStatusBarTintEnabled(true); tintManager.setStatusBarTintResource(R.color.top_bg_color);//通知欄所需顏色} setContentView(R.layout.main_activity);}@TargetApi(19) private void setTranslucentStatus(boolean on) { Window win = getWindow(); WindowManager.LayoutParams winParams = win.getAttributes(); final int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS; if (on) { winParams.flags |= bits; } else { winParams.flags &= ~bits; } win.setAttributes(winParams); }

需注意的是，?tintManager.setStatusBarTintResource(R.color.top_bg_color);這一步的顏色值（即把你的狀態(tài)欄顏色與你的標題欄顏色保持一致）要寫在color.xml中去，假設用Color.praseColor則會報錯。

SystemBarTintManager.java源代碼：

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.**/ @SuppressWarnings({ "rawtypes", "unchecked" }) 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#L1076if (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 attrsint[] 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 flagsWindowManager.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 keysif (!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 { // fallbackreturn !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-kitkatactivity.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;}}}} 引用自：https://github.com/jgilfelt/SystemBarTint

代碼復制進你的項目就可以，好了，這些工作完畢之后我們來看下效果：

貌似已經達到效果了。但細致觀察，好像標題欄被提上去了。就是說APP界面全屏了，狀態(tài)了蓋在了APP上。恩。這并不是我們想要的效果。那怎樣將界面從狀態(tài)欄下部開始呢，僅僅須要在Activity的布局文件最外層控件加上一個屬性：

?android:fitsSystemWindows="true"就能夠啦。看下效果：

OK，大功告成！

PS：在使用過程中發(fā)現(xiàn)了一些問題，使用以上方法對單個Activity有效，可是對繼承了TabActivity的導航頁怎么辦呢？假如MainActivity繼承了TabActivity，Tab1Activity、Tab2Activity、Tab3Activity是三個子項，那么設置狀態(tài)欄的代碼需寫在MainActivity中，而?android:fitsSystemWindows="true"需寫在三個子Activity的xml布局文件里，這樣設置后仍然有問題，就是進入應用后首頁也就是Tab1Activity沒有問題。而Tab2Activity、Tab3Activity卻沒達到效果，它們的效果相當于未加android:fitsSystemWindows="true"時的效果。期初我懷疑是Activity不同的原因。因此我把Tab1Activity和Tab3Activity調了下位置，結果Tab3Activity成為首頁后正常，而Tab1Activity又不正常了，百思不得姐，最后實在沒辦法，就在Tab2Activity、Tab3Activity的OnCreate方法中加了幾句代碼：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {((LinearLayout)findViewById(R.id.ll)).setPadding(0, SysUtils.getStatusHeight(this), 0,0);}意思是。先求出狀態(tài)欄高度，然后設置最外層控件的PaddingTop值為狀態(tài)欄高度。結果正好達到效果。至于為什么僅僅有首頁Activity能夠達到效果，而后面的子項無法達到效果。本人也在郁悶中，有知道的朋友能夠分享下！

狀態(tài)欄高度算法：

/*** 狀態(tài)欄高度算法* @param activity* @return*/public static int getStatusHeight(Activity activity){ int statusHeight = 0; Rect localRect = new Rect(); activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(localRect); statusHeight = localRect.top; if (0 == statusHeight){ Class<?> localClass; try { localClass = Class.forName("com.android.internal.R$dimen"); Object localObject = localClass.newInstance(); int i5 = Integer.parseInt(localClass.getField("status_bar_height").get(localObject).toString()); statusHeight = activity.getResources().getDimensionPixelSize(i5); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (NumberFormatException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (NoSuchFieldException e) { e.printStackTrace(); } } return statusHeight; }

總結

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