Question

我使用此代码搜索最佳提供商：

Criteria criteria = new Criteria();
criteria.setPowerRequirement(Criteria.POWER_MEDIUM);
criteria.setAccuracy(Criteria.ACCURACY_HIGH);
criteria.setSpeedRequired(false);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(false);

return locationManager.getBestProvider(criteria, true);

显然，我有必要的权限：

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

然而，它给了我一个错误

network provider does not exist, accuracy=3

奇怪的是，如果我使用

criteria.setAccuracy(Criteria.ACCURACY_FINE);//FINE, not HIGH

它运作正常。可能是什么原因？如何使用HIGH值？

Answer 1

请参阅Criteria.setAccuracy：

/**
 * Indicates the desired accuracy for latitude and longitude. Accuracy
 * may be {@link #ACCURACY_FINE} if desired location
 * is fine, else it can be {@link #ACCURACY_COARSE}.
 * More accurate location may consume more power and may take longer.
 *
 * @throws IllegalArgumentException if accuracy is not one of the supported constants
 */
public void setAccuracy(int accuracy) {
    if (accuracy < NO_REQUIREMENT || accuracy > ACCURACY_COARSE) {
        throw new IllegalArgumentException("accuracy=" + accuracy);
    }
    if (accuracy == ACCURACY_FINE) {
        mHorizontalAccuracy = ACCURACY_HIGH;
    } else {
        mHorizontalAccuracy = ACCURACY_LOW;
    }
}

setAccuracy（ACCURACY_FINE）会将mHorizontalAccuracy分配给ACCURACY_HIGH

请求提供者时出现“网络提供商不存在，准确度= 3”错误

1 个答案: