三星ANDROID手机调整闪光灯的亮度

该方法并不是所有Android手机都能用，仅在三星手机上测试过

三星在CameraManager里面增加了setTorchMode和semSetTorchMode函数，这两个函数是一样的

函数原型

    public void setTorchMode(String cameraId, boolean enabled, int strength);

    public void semSetTorchMode(String cameraId, boolean enabled, int strength);

通过反射来调用

CameraManager am = (CameraManager) getSystemService(Context.CAMERA_SERVICE);


Method localMethod = null;
try {
    String [] cameraIdList = am.getCameraIdList();

    localMethod = am.getClass().getMethod("semSetTorchMode", new Class[]{String.class, boolean.class, int.class});
    Object []params = new Object[3];
    params[0] = cameraIdList[0]; // 摄像头ID
    params[1] = true; // true打开, false关闭
    params[2] = 2;    // 闪光灯亮度,范围0~6

    localMethod.invoke(am, params);
} catch (NoSuchMethodException e) {
    e.printStackTrace();
} catch (IllegalAccessException e) {
    e.printStackTrace();
} catch (InvocationTargetException e) {
    e.printStackTrace();
} catch (CameraAccessException e) {
    e.printStackTrace();
}