Android沉浸式状态栏实现

  // 需要setContentView之前调用  private void setTranslucentStatus() {  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {    // 透明状态栏    getWindow().addFlags(        WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);    // 透明导航栏    getWindow().addFlags(        WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);          SystemStatusManager tintManager = new SystemStatusManager(this);    tintManager.setStatusBarTintEnabled(true);          // 设置状态栏的颜色           tintManager.setStatusBarTintResource(R.color.theme_color);    getWindow().getDecorView().setFitsSystemWindows(true);  }}

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;@SuppressWarnings({ “unchecked”, “rawtypes” }) public class SystemStatusManager { static { 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 SystemStatusManager(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 {      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;    }  }}}