Android Launcher 隐藏和开启底部虚拟按键（动态更改）

Android Launcher 隐藏和开启底部虚拟按键（动态更改）

方法一：这里我们可以写一个工具类 KeyButtonControl.java class KeyButtonControl {private static final String TAG = "KeyButtonControl";public static final String STATUS_BAR_SERVICE = "statusbar";public static final String CLASS_STATUS_BAR_MANAGER = "android.app.StatusBarManager";public static final String METHOD_DISABLE = "disable";/*public static final int STATUS_BAR_DISABLE_HOME = 0x00200000;// 为View.STATUS_BAR_DISABLE_HOME的值public static final int STATUS_BAR_DISABLE_BACK = 0x00400000;// 为View.STATUS_BAR_DISABLE_BACK的值public static final int STATUS_BAR_DISABLE_RECENT = 0x01000000;// 为View.STATUS_BAR_DISABLE_RECENT的值public static final int STATUS_BAR_DISABLE_EXPAND = 0x00010000;//整形标识public static final int STATUS_BAR_DISABLE_NONE = 0x00000000;//取消StatusBar所有disable属性，即还原到最最原始状态*//*** 隐藏Back按键*/public static void hideBackKey(Context mContext){try {@SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);Class statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);Method disable = statusBarManager.getMethod(METHOD_DISABLE,int.class);disable.invoke(service, 0x00400000);Log.i(TAG,"mdm hideBackKey"); } catch (Exception e) {e.printStackTrace(); } }///*** 隐藏Home按键*/public static void hideHomeKey(Context mContext){try {@SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);Class statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);Method disable = statusBarManager.getMethod(METHOD_DISABLE,int.class);disable.invoke(service, 0x00200000);Log.i(TAG,"mdm hideHomeKey"); } catch (Exception e) {e.printStackTrace(); } }///*** 隐藏Task按键*/public static void hideTaskKey(Context mContext){try {@SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);Class statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);Method disable = statusBarManager.getMethod(METHOD_DISABLE,int.class);disable.invoke(service, 0x00200000 | 0x00400000 | 0x01000000);Log.i(TAG,"mdm hideBackKey"); } catch (Exception e) {e.printStackTrace(); } }/*** 隐藏全部按键*/public static void hideAllKey(Context mContext){try {@SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);Class statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);Method disable = statusBarManager.getMethod(METHOD_DISABLE,int.class);disable.invoke(service, 0x00200000 | 0x00400000 | 0x01000000);Log.i(TAG,"mdm hideBackKey"); } catch (Exception e) {e.printStackTrace(); } }/*** 显示全部按键*/public static void showAllKey(Context mContext){try {@SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);Class statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);Method disable = statusBarManager.getMethod(METHOD_DISABLE,int.class);disable.invoke(service, 0x00000000);Log.i(TAG,"mdm showAllKey"); } catch (Exception e) {e.printStackTrace(); } }} 方法二：frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java 将 VISIBLE 更改为 INVISIBLE 即可 getBackButton().setVisibility(disableBack ? View.INVISIBLE : View.VISIBLE);getHomeButton().setVisibility(disableHome ? View.INVISIBLE : View.VISIBLE);getRecentsButton().setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);

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