android沉浸式状态栏

本文参考SystemBarTint开源项目，感兴趣的可以下载源码：https://github.com/jgilfelt/SystemBarTint

沉浸式状态栏一般分为三种用法：

一、默认透明／半透明效果，全屏滚动

需要与activity全屏效果搭配使用。只需3步，步骤：

1、manifest.xml设置activity主题android:theme="@style/FullBleedTheme"

<style
name="FullBleedTheme"
parent="android:Theme.Light.NoTitleBar">

<!-- All customizations that are NOT specific to a particular API-level can go here. -->

</style>
2、在activity的setContentView方法后加如下代码：

SystemBarTintManager tintManager =
new SystemBarTintManager(this);

tintManager.setStatusBarTintEnabled(true);

tintManager.setNavigationBarTintEnabled(true);

tintManager.setTintColor(Color.TRANSPARENT);//设置为透明效果，不设置默认为半透明

3、SystemBarTintManager代码在文章最后给出

二、改变状态栏颜色或图片，与导航栏样式保持一致

1、activity的setContentView后面添加

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

setTranslucentStatus(true);

}

SystemBarTintManager tintManager = new SystemBarTintManager(this);

tintManager.setStatusBarTintEnabled(true);

tintManager.setStatusBarTintResource(R.drawable.bls_red_shape_style);

2、setTranslucentStatus方法

@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);

}

三、SystemBarTintManager代码

/**

* 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 {

4000

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;

}

}

}

}

注：文章是为了记笔记，有不好的地方请见谅。