Exemplos de MtpProperty::setDefaultValue em C++ (Cpp)

Exemplo n.º 1

Arquivo: android_mtp_MtpDatabase.cpp Projeto: 21day/platform_frameworks_base

MtpProperty* MyMtpDatabase::getDevicePropertyDesc(MtpDeviceProperty property) {
    JNIEnv* env = AndroidRuntime::getJNIEnv();
    MtpProperty* result = NULL;
    bool writable = false;

    switch (property) {
        case MTP_DEVICE_PROPERTY_SYNCHRONIZATION_PARTNER:
        case MTP_DEVICE_PROPERTY_DEVICE_FRIENDLY_NAME:
            writable = true;
            // fall through
        case MTP_DEVICE_PROPERTY_IMAGE_SIZE:
            result = new MtpProperty(property, MTP_TYPE_STR, writable);

            // get current value
            jint ret = env->CallIntMethod(mDatabase, method_getDeviceProperty,
                        (jint)property, mLongBuffer, mStringBuffer);
            if (ret == MTP_RESPONSE_OK) {
                jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
                result->setCurrentValue(str);
                // for read-only properties it is safe to assume current value is default value
                if (!writable)
                    result->setDefaultValue(str);
                env->ReleaseCharArrayElements(mStringBuffer, str, 0);
            } else {
                ALOGE("unable to read device property, response: %04X", ret);
            }
            break;
    }

    checkAndClearExceptionFromCallback(env, __FUNCTION__);
    return result;
}