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当Android系统版本大于19（4.4），就可以开启沉浸式标题栏：
可以将其封装成方法进行调用。
1 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
2 Window win = getWindow();
3
4 WindowManager.LayoutParams winParams = win.getAttributes();
5 winParams.flags |= WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
6 win.setAttributes(winParams);
7
8 SystemBarTintManager tintManager = new SystemBarTintManager(this);
9 tintManager.setStatusBarTintEnabled(true);
10 tintManager.setStatusBarTintColor(Color.TRANSPARENT);
11 }
// 沉浸式状态栏
其第三方源代码：
1 /**
2 * Class to manage status and navigation bar tint effects when using KitKat
3 * translucent system UI modes.
4 *
5 */
6 public class SystemBarTintManager {
7
8 static {
9 // Android allows a system property to override the presence of the navigation bar.
10 // Used by the emulator.
11 // See https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076
12 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
13 try {
14 Class c = Class.forName("android.os.SystemProperties");
15 Method m = c.getDeclaredMethod("get", String.class);
16 m.setAccessible(true);
17 sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");
18 } catch (Throwable e) {
19 sNavBarOverride = null;
20 }
21 }
22 }
23
24
25 /**
26 * The default system bar tint color value.
27 */
28 public static final int DEFAULT_TINT_COLOR = 0x99000000;
29
30 private static String sNavBarOverride;
31
32 private final SystemBarConfig mConfig;
33 private boolean mStatusBarAvailable;
34 private boolean mNavBarAvailable;
35 private boolean mStatusBarTintEnabled;
36 private boolean mNavBarTintEnabled;
37 private View mStatusBarTintView;
38 private View mNavBarTintView;
39
40 /**
41 * Constructor. Call this in the host activity onCreate method after its
42 * content view has been set. You should always create new instances when
43 * the host activity is recreated.
44 *
45 * @param activity The host activity.
46 */
47 @TargetApi(19)
48 public SystemBarTintManager(Activity activity) {
49
50 Window win = activity.getWindow();
51 ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();
52
53 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
54 // check theme attrs
55 int[] attrs = {android.R.attr.windowTranslucentStatus,
56 android.R.attr.windowTranslucentNavigation};
57 TypedArray a = activity.obtainStyledAttributes(attrs);
58 try {
59 mStatusBarAvailable = a.getBoolean(0, false);
60 mNavBarAvailable = a.getBoolean(1, false);
61 } finally {
62 a.recycle();
63 }
64
65 // check window flags
66 WindowManager.LayoutParams winParams = win.getAttributes();
67 int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
68 if ((winParams.flags & bits) != 0) {
69 mStatusBarAvailable = true;
70 }
71 bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
72 if ((winParams.flags & bits) != 0) {
73 mNavBarAvailable = true;
74 }
75 }
76
77 mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);
78 // device might not have virtual navigation keys
79 if (!mConfig.hasNavigtionBar()) {
80 mNavBarAvailable = false;
81 }
82
83 if (mStatusBarAvailable) {
84 setupStatusBarView(activity, decorViewGroup);
85 }
86 if (mNavBarAvailable) {
87 setupNavBarView(activity, decorViewGroup);
88 }
89
90 }
91
92 /**
93 * Enable tinting of the system status bar.
94 *
95 * If the platform is running Jelly Bean or earlier, or translucent system
96 * UI modes have not been enabled in either the theme or via window flags,
97 * then this method does nothing.
98 *
99 * @param enabled True to enable tinting, false to disable it (default).
100 */
101 public void setStatusBarTintEnabled(boolean enabled) {
102 mStatusBarTintEnabled = enabled;
103 if (mStatusBarAvailable) {
104 mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
105 }
106 }
107
108 /**
109 * Enable tinting of the system navigation bar.
110 *
111 * If the platform does not have soft navigation keys, is running Jelly Bean
112 * or earlier, or translucent system UI modes have not been enabled in either
113 * the theme or via window flags, then this method does nothing.
114 *
115 * @param enabled True to enable tinting, false to disable it (default).
116 */
117 public void setNavigationBarTintEnabled(boolean enabled) {
118 mNavBarTintEnabled = enabled;
119 if (mNavBarAvailable) {
120 mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
121 }
122 }
123
124 /**
125 * Apply the specified color tint to all system UI bars.
126 *
127 * @param color The color of the background tint.
128 */
129 public void setTintColor(int color) {
130 setStatusBarTintColor(color);
131 setNavigationBarTintColor(color);
132 }
133
134 /**
135 * Apply the specified drawable or color resource to all system UI bars.
136 *
137 * @param res The identifier of the resource.
138 */
139 public void setTintResource(int res) {
140 setStatusBarTintResource(res);
141 setNavigationBarTintResource(res);
142 }
143
144 /**
145 * Apply the specified drawable to all system UI bars.
146 *
147 * @param drawable The drawable to use as the background, or null to remove it.
148 */
149 public void setTintDrawable(Drawable drawable) {
150 setStatusBarTintDrawable(drawable);
151 setNavigationBarTintDrawable(drawable);
152 }
153
154 /**
155 * Apply the specified alpha to all system UI bars.
156 *
157 * @param alpha The alpha to use
158 */
159 public void setTintAlpha(float alpha) {
160 setStatusBarAlpha(alpha);
161 setNavigationBarAlpha(alpha);
162 }
163
164 /**
165 * Apply the specified color tint to the system status bar.
166 *
167 * @param color The color of the background tint.
168 */
169 public void setStatusBarTintColor(int color) {
170 if (mStatusBarAvailable) {
171 mStatusBarTintView.setBackgroundColor(color);
172 }
173 }
174
175 /**
176 * Apply the specified drawable or color resource to the system status bar.
177 *
178 * @param res The identifier of the resource.
179 */
180 public void setStatusBarTintResource(int res) {
181 if (mStatusBarAvailable) {
182 mStatusBarTintView.setBackgroundResource(res);
183 }
184 }
185
186 /**
187 * Apply the specified drawable to the system status bar.
188 *
189 * @param drawable The drawable to use as the background, or null to remove it.
190 */
191 @SuppressWarnings("deprecation")
192 public void setStatusBarTintDrawable(Drawable drawable) {
193 if (mStatusBarAvailable) {
194 mStatusBarTintView.setBackgroundDrawable(drawable);
195 }
196 }
197
198 /**
199 * Apply the specified alpha to the system status bar.
200 *
201 * @param alpha The alpha to use
202 */
203 @TargetApi(11)
204 public void setStatusBarAlpha(float alpha) {
205 if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
206 mStatusBarTintView.setAlpha(alpha);
207 }
208 }
209
210 /**
211 * Apply the specified color tint to the system navigation bar.
212 *
213 * @param color The color of the background tint.
214 */
215 public void setNavigationBarTintColor(int color) {
216 if (mNavBarAvailable) {
217 mNavBarTintView.setBackgroundColor(color);
218 }
219 }
220
221 /**
222 * Apply the specified drawable or color resource to the system navigation bar.
223 *
224 * @param res The identifier of the resource.
225 */
226 public void setNavigationBarTintResource(int res) {
227 if (mNavBarAvailable) {
228 mNavBarTintView.setBackgroundResource(res);
229 }
230 }
231
232 /**
233 * Apply the specified drawable to the system navigation bar.
234 *
235 * @param drawable The drawable to use as the background, or null to remove it.
236 */
237 @SuppressWarnings("deprecation")
238 public void setNavigationBarTintDrawable(Drawable drawable) {
239 if (mNavBarAvailable) {
240 mNavBarTintView.setBackgroundDrawable(drawable);
241 }
242 }
243
244 /**
245 * Apply the specified alpha to the system navigation bar.
246 *
247 * @param alpha The alpha to use
248 */
249 @TargetApi(11)
250 public void setNavigationBarAlpha(float alpha) {
251 if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
252 mNavBarTintView.setAlpha(alpha);
253 }
254 }
255
256 /**
257 * Get the system bar configuration.
258 *
259 * @return The system bar configuration for the current device configuration.
260 */
261 public SystemBarConfig getConfig() {
262 return mConfig;
263 }
264
265 /**
266 * Is tinting enabled for the system status bar?
267 *
268 * @return True if enabled, False otherwise.
269 */
270 public boolean isStatusBarTintEnabled() {
271 return mStatusBarTintEnabled;
272 }
273
274 /**
275 * Is tinting enabled for the system navigation bar?
276 *
277 * @return True if enabled, False otherwise.
278 */
279 public boolean isNavBarTintEnabled() {
280 return mNavBarTintEnabled;
281 }
282
283 private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {
284 mStatusBarTintView = new View(context);
285 LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());
286 params.gravity = Gravity.TOP;
287 if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {
288 params.rightMargin = mConfig.getNavigationBarWidth();
289 }
290 mStatusBarTintView.setLayoutParams(params);
291 mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
292 mStatusBarTintView.setVisibility(View.GONE);
293 decorViewGroup.addView(mStatusBarTintView);
294 }
295
296 private void setupNavBarView(Context context, ViewGroup decorViewGroup) {
297 mNavBarTintView = new View(context);
298 LayoutParams params;
299 if (mConfig.isNavigationAtBottom()) {
300 params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());
301 params.gravity = Gravity.BOTTOM;
302 } else {
303 params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);
304 params.gravity = Gravity.RIGHT;
305 }
306 mNavBarTintView.setLayoutParams(params);
307 mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
308 mNavBarTintView.setVisibility(View.GONE);
309 decorViewGroup.addView(mNavBarTintView);
310 }
311
312 /**
313 * Class which describes system bar sizing and other characteristics for the current
314 * device configuration.
315 *
316 */
317 public static class SystemBarConfig {
318
319 private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";
320 private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";
321 private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";
322 private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";
323 private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";
324
325 private final boolean mTranslucentStatusBar;
326 private final boolean mTranslucentNavBar;
327 private final int mStatusBarHeight;
328 private final int mActionBarHeight;
329 private final boolean mHasNavigationBar;
330 private final int mNavigationBarHeight;
331 private final int mNavigationBarWidth;
332 private final boolean mInPortrait;
333 private final float mSmallestWidthDp;
334
335 private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {
336 Resources res = activity.getResources();
337 mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);
338 mSmallestWidthDp = getSmallestWidthDp(activity);
339 mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);
340 mActionBarHeight = getActionBarHeight(activity);
341 mNavigationBarHeight = getNavigationBarHeight(activity);
342 mNavigationBarWidth = getNavigationBarWidth(activity);
343 mHasNavigationBar = (mNavigationBarHeight > 0);
344 mTranslucentStatusBar = translucentStatusBar;
345 mTranslucentNavBar = traslucentNavBar;
346 }
347
348 @TargetApi(14)
349 private int getActionBarHeight(Context context) {
350 int result = 0;
351 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
352 TypedValue tv = new TypedValue();
353 context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
354 result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
355 }
356 return result;
357 }
358
359 @TargetApi(14)
360 private int getNavigationBarHeight(Context context) {
361 Resources res = context.getResources();
362 int result = 0;
363 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
364 if (hasNavBar(context)) {
365 String key;
366 if (mInPortrait) {
367 key = NAV_BAR_HEIGHT_RES_NAME;
368 } else {
369 key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;
370 }
371 return getInternalDimensionSize(res, key);
372 }
373 }
374 return result;
375 }
376
377 @TargetApi(14)
378 private int getNavigationBarWidth(Context context) {
379 Resources res = context.getResources();
380 int result = 0;
381 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
382 if (hasNavBar(context)) {
383 return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);
384 }
385 }
386 return result;
387 }
388
389 @TargetApi(14)
390 private boolean hasNavBar(Context context) {
391 Resources res = context.getResources();
392 int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool", "android");
393 if (resourceId != 0) {
394 boolean hasNav = res.getBoolean(resourceId);
395 // check override flag (see static block)
396 if ("1".equals(sNavBarOverride)) {
397 hasNav = false;
398 } else if ("0".equals(sNavBarOverride)) {
399 hasNav = true;
400 }
401 return hasNav;
402 } else { // fallback
403 return !ViewConfiguration.get(context).hasPermanentMenuKey();
404 }
405 }
406
407 private int getInternalDimensionSize(Resources res, String key) {
408 int result = 0;
409 int resourceId = res.getIdentifier(key, "dimen", "android");
410 if (resourceId > 0) {
411 result = res.getDimensionPixelSize(resourceId);
412 }
413 return result;
414 }
415
416 @SuppressLint("NewApi")
417 private float getSmallestWidthDp(Activity activity) {
418 DisplayMetrics metrics = new DisplayMetrics();
419 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
420 activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);
421 } else {
422 // TODO this is not correct, but we don‘t really care pre-kitkat
423 activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
424 }
425 float widthDp = metrics.widthPixels / metrics.density;
426 float heightDp = metrics.heightPixels / metrics.density;
427 return Math.min(widthDp, heightDp);
428 }
429
430 /**
431 * Should a navigation bar appear at the bottom of the screen in the current
432 * device configuration? A navigation bar may appear on the right side of
433 * the screen in certain configurations.
434 *
435 * @return True if navigation should appear at the bottom of the screen, False otherwise.
436 */
437 public boolean isNavigationAtBottom() {
438 return (mSmallestWidthDp >= 600 || mInPortrait);
439 }
440
441 /**
442 * Get the height of the system status bar.
443 *
444 * @return The height of the status bar (in pixels).
445 */
446 public int getStatusBarHeight() {
447 return mStatusBarHeight;
448 }
449
450 /**
451 * Get the height of the action bar.
452 *
453 * @return The height of the action bar (in pixels).
454 */
455 public int getActionBarHeight() {
456 return mActionBarHeight;
457 }
458
459 /**
460 * Does this device have a system navigation bar?
461 *
462 * @return True if this device uses soft key navigation, False otherwise.
463 */
464 public boolean hasNavigtionBar() {
465 return mHasNavigationBar;
466 }
467
468 /**
469 * Get the height of the system navigation bar.
470 *
471 * @return The height of the navigation bar (in pixels). If the device does not have
472 * soft navigation keys, this will always return 0.
473 */
474 public int getNavigationBarHeight() {
475 return mNavigationBarHeight;
476 }
477
478 /**
479 * Get the width of the system navigation bar when it is placed vertically on the screen.
480 *
481 * @return The width of the navigation bar (in pixels). If the device does not have
482 * soft navigation keys, this will always return 0.
483 */
484 public int getNavigationBarWidth() {
485 return mNavigationBarWidth;
486 }
487
488 /**
489 * Get the layout inset for any system UI that appears at the top of the screen.
490 *
491 * @param withActionBar True to include the height of the action bar, False otherwise.
492 * @return The layout inset (in pixels).
493 */
494 public int getPixelInsetTop(boolean withActionBar) {
495 return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);
496 }
497
498 /**
499 * Get the layout inset for any system UI that appears at the bottom of the screen.
500 *
501 * @return The layout inset (in pixels).
502 */
503 public int getPixelInsetBottom() {
504 if (mTranslucentNavBar && isNavigationAtBottom()) {
505 return mNavigationBarHeight;
506 } else {
507 return 0;
508 }
509 }
510
511 /**
512 * Get the layout inset for any system UI that appears at the right of the screen.
513 *
514 * @return The layout inset (in pixels).
515 */
516 public int getPixelInsetRight() {
517 if (mTranslucentNavBar && !isNavigationAtBottom()) {
518 return mNavigationBarWidth;
519 } else {
520 return 0;
521 }
522 }
523
524 }
525
526 }
---恢复内容结束---
时间： 2024-10-25 13:54:16