买了个SAMSUNG Galaxy A9 (SM-A9000)

Moto G LTE(thea)只有1G的内存,运行Android 5.0.2的系统,在打开应用或者打开网页比较多比较多的情况下,内存会经常出来不够用的情况。可以感觉到,在recent app中切换较早打开的应用的时候,就像开机后第一次打开的那种情况,说明应用在后台已经被杀死了。还是换一台手机吧,Galaxy A9不知道怎么样,买一个回来看看。

  • 特点:
  1. 双面2.5D玻璃金属边框设计
  2. 6英寸全高清Super AMOLED屏
  3. 13M主摄象头,OIS光学防抖,F1.9大光圈, 1080p录象
  4. 8M前置摄象头,F1.9大光圈
  5. 大电池(4000mAH)
  6. 骁龙652(MSM8976)处理器,3G内存
  7. 指纹解锁
  • 所使用的sensor:
DUMP OF SERVICE sensorservice:
Sensor List:
BOSCH Accelerometer Sensor| Bosch Sensortec GmbH| version=4 |android.sensor.accelerometer| 0x00001c10 | "" | type=1 | continuous | minRate=6.25Hz | maxRate=100.00Hz | no batching | non-wakeUp | last=<  2.1, -3.6,  8.4, 106457819709>
Samsung Significant Motion Sensor| Bosch Sensortec GmbH| version=1 |android.sensor.significant_motion| 0x00001c40 | "" | type=17 | one-shot | maxDelay=0us |minDelay=-1us |no batching | wakeUp | last=<0.000000 0>
Samsung Step Detector Sensor| Bosch Sensortec GmbH| version=1 |android.sensor.step_detector| 0x00001c21 | "" | type=18 | special-trigger | maxDelay=0us |minDelay=0us |no batching | non-wakeUp | last=<0.000000 0>
Samsung Step Counter Sensor| Bosch Sensortec GmbH| version=1 |android.sensor.step_counter| 0x00001c22 | "" | type=19 | on-change | maxDelay=0us |minDelay=0us |no batching | non-wakeUp | last=<0, 0>
BOSCH Tilt Detector Sensor| Bosch Sensortec GmbH| version=1 |android.sensor.tilt_detector| 0x00001c45 | "" | type=22 | special-trigger | maxDelay=0us |minDelay=-1us |no batching | wakeUp | last=<  0.0,  0.0,  0.0, 0>
BOSCH Pick Up Gesture Sensor| Bosch Sensortec GmbH| version=1 |android.sensor.pick_up_gesture| 0x00001c48 | "" | type=25 | one-shot | maxDelay=0us |minDelay=-1us |no batching | wakeUp | last=<  0.0,  0.0,  0.0, 0>
Samsung AutoRotation| Samsung   | version=4 |com.samsung.sensor.screen_rotation| 0x00001c29 | "" | type=65558 | on-change | maxDelay=0us |minDelay=0us |no batching | non-wakeUp | last=< -1.0,  0.0,  0.0, 98243126168>
AK09916C Magnetic field Sensor| Asahi Kasei Microdevices| version=1 |android.sensor.magnetic_field| 0x00000002 | "" | type=2 | continuous | minRate=5.00Hz | maxRate=100.00Hz | no batching | non-wakeUp | last=<  0.0,  0.0,  0.0, 0>
AK09916C Uncalibrated Magnetic field Sensor| Asahi Kasei Microdevices| version=1 |android.sensor.magnetic_field_uncalibrated| 0x00000005 | "" | type=14 | continuous | minRate=5.00Hz | maxRate=100.00Hz | no batching | non-wakeUp | last=<  0.0,  0.0,  0.0,  0.0,  0.0,  0.0, 0>
CM36655 Proximity Sensor| Capella Microsystems, Inc.| version=1 |android.sensor.proximity| 0x00000003 | "" | type=8 | on-change | minRate=5.00Hz | minDelay=0us |no batching | wakeUp | last=<  0.0,  0.0,  0.0, 0>
CM36655 Light Sensor| Capella Microsystems, Inc.| version=1 |android.sensor.light| 0x00000004 | "" | type=5 | on-change | minRate=5.00Hz | maxRate=100.00Hz | no batching | non-wakeUp | last=<  5.0,4354.0,  0.0, 106369797562>
Samsung Geomagnetic Rotation Vector Sensor| Samsung Electronics.| version=1 |android.sensor.geomagnetic_rotation_vector| 0x5f677276 | "" | type=20 | continuous | maxDelay=0us |maxRate=100.00Hz | no batching | non-wakeUp | last=<  0.0,  0.0,  0.0,  0.0,  0.0, 0>
Orientation Sensor| Samsung Electronics.| version=1 |android.sensor.orientation| 0x73797072 | "" | type=3 | continuous | maxDelay=0us |maxRate=100.00Hz | no batching | non-wakeUp | last=<  0.0,  0.0,  0.0, 0>
9-axis fusion disabled (0 clients), gyro-rate= 200.00Hz, q=< 0, 0, 0, 0 > (0), b=< 0, 0, 0 >
halVersion 16973825
11 h/w sensors:
handle=0x00001c10, active-count=1, batch_period(ms)={ 200.0 }, selected=200.0 ms
handle=0x00001c10, active-count=1, batch_timeout(ms)={  0.0 }, selected= 0.0 ms
handle=0x00001c40, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00001c40, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00001c21, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00001c21, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00001c22, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00001c22, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00001c45, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00001c45, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00001c48, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00001c48, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00001c29, active-count=1, batch_period(ms)={  1.0 }, selected= 1.0 ms
handle=0x00001c29, active-count=1, batch_timeout(ms)={  0.0 }, selected= 0.0 ms
handle=0x00000002, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00000002, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00000005, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00000005, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00000003, active-count=0, batch_period(ms)={  }, selected=-0.0 ms
handle=0x00000003, active-count=0, batch_timeout(ms)={  }, selected=-0.0 ms
handle=0x00000004, active-count=1, batch_period(ms)={ 200.0 }, selected=200.0 ms
handle=0x00000004, active-count=1, batch_timeout(ms)={  0.0 }, selected= 0.0 ms
Active sensors:
CM36655 Light Sensor (handle=0x00000004, connections=1)
BOSCH Accelerometer Sensor (handle=0x00001c10, connections=1)
Samsung AutoRotation (handle=0x00001c29, connections=1)
Socket Buffer size = 39 events

没有陀螺仪?但是有signification motion sensor, step detector sensor, step counter sensor, pick up gesture sensor, geomagnetic rotation vector sensor。

9-axis fusion disabled(0 clients), gyro-rate=200.00Hz, 到低有没有陀螺仪啊?

[2016-01-12 20:57:41]

今天特地去看了一下代码,看到是没有gyroscope了

相关的代码在这里:frameworks/native/services/sensorservice/SensorFusion.cpp

从dump出来的sensor list中也可以看到,系统中的rotation vector为geomagnetic rotation vector, 而并非game rotation vector。相比于game rotation vector (based on gyroscope), 优点是:

  1. 功耗低
  2. 在户外的性能会更好

但噪声会相对大一些

详见frameworks/base/core/java/android/hardware/Sensor.java @ android-5.1

 

  • 对USB OTG的支持情况

支持

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