如果device不支持某种sensor,可以在android/frameworks/base/core/java/android/hardware/SystemSensorManager.java里将其disabled掉。以disable proximity sensor为例。
public SystemSensorManager(Context context, Looper mainLooper) { synchronized(sLock) { if (!sNativeClassInited) { sNativeClassInited = true; nativeClassInit(); } } mMainLooper = mainLooper; mTargetSdkLevel = context.getApplicationInfo().targetSdkVersion; mContext = context; mNativeInstance = nativeCreate(context.getOpPackageName()); // initialize the sensor list for (int index = 0;;++index) { Sensor sensor = new Sensor(); if (!nativeGetSensorAtIndex(mNativeInstance, sensor, index)) break; //disable p_sensor solution: Remove proximity sensor from sensor list. if ((sensor != null) && sensor.getType() == Sensor.TYPE_PROXIMITY){ Log.i(TAG,"skip proximity sensor"); continue; } mFullSensorsList.add(sensor); mHandleToSensor.put(sensor.getHandle(), sensor); } }
就是将p_sensor 从mFullSensorsList中移出。这一步基本上已经work了(SensorManager#getSensorList(8)得不到p_sensor的讯息)，但是如果你的code还需要通过CTS测试，那么最好在android/frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.java的hasSystemFeature方法里做remove proximity sensor feature
public boolean hasSystemFeature(String name, int version) { // allow instant applications synchronized (mAvailableFeatures) { final FeatureInfo feat = mAvailableFeatures.get(name); if (feat == null) { return false; } else { //remove proximity sensor feature if(name.equals("android.hardware.sensor.proximity")){ Log.w(TAG, "skip standard proximity sensor"); return false; } return feat.version >= version; } } }
这样一来PackageManager#hasSystemFeature(android.hardware.sensor.proximity) return false。
可用命令adb shell pm list features来检查device都support 那些功能。
或者尝试删除frameworks\native\data\etc下相关的配置文件
