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在我的应用程序中，我有4到5个片段，并且所有片段都需要GoogleApiCLient对象以获取当前位置并执行其他相关操作。使用GoogleApiClient挂起应用程序
所以，我只是用GoogleApiClient如下：
首先我实现如：片段的
private GoogleApiClient mGoogleApiClient;
在侧的onCreate（）：
implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener
宣言：
if (!Constant.checkPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION)) {
Constant.requestPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION, 101);
} else {
if (Constant.isOnline(mContext)) {
buildGoogleApiClient();
locationUpdate();
} else {
Constant.displayToast(mContext, getResources().getString(R.string.msg_internet));
}
}
层楼高如下：
private synchronized void buildGoogleApiClient() {
if (mGoogleApiClient == null || !mGoogleApiClient.isConnected()) {
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addApi(LocationServices.API)
.addApi(Places.GEO_DATA_API)
.addApi(Places.PLACE_DETECTION_API)
.enableAutoManage(getActivity(), MapFragment.this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
}
onConnected方法：
@Override
public void onConnected(@Nullable Bundle bundle) {
try {
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
} catch (Exception e) {
e.printStackTrace();
}
}
的getLocation（）方法：
private void getLocation() {
try {
if (ActivityCompat.checkSelfPermission((Activity) mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission((Activity) mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
} else {
mLocationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
boolean isGPSEnabled = mLocationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
boolean isNetworkEnabled = mLocationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
if (Prefrences.checkPref(mContext, ZIPCODE)) {
getLatLongFromZipCode();
} else {
if (isNetworkEnabled) {
if (!Prefrences.checkPref(mContext, NEAR_ME_SEARCH)) {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
} else if (mLastLocation != null) {
mCurrentLatitude = mLastLocation.getLatitude();
mCurrentLongitude = mLastLocation.getLongitude();
} else {
Constant.displayToast(mContext, "Location not fetched. Try again.");
}
}
}
} else if (isGPSEnabled) {
if (!Prefrences.checkPref(mContext, NEAR_ME_SEARCH)) {
if (mLocation == null) {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
0,
0, this);
if (mLocationManager != null) {
mLocation = mLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (mLocation != null) {
mCurrentLatitude = mLocation.getLatitude();
mCurrentLongitude = mLocation.getLongitude();
} else if (mLastLocation != null) {
mCurrentLatitude = mLastLocation.getLatitude();
mCurrentLongitude = mLastLocation.getLongitude();
} else {
Constant.displayToast(mContext, "Location not fetched. Try again.");
}
}
}
}
}
loadServiceData();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
locationUpdate（）方法，其中的getLocation（）方法被调用：
private void locationUpdate() {
try {
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(5 * 1000);
mLocationRequest.setFastestInterval(1 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
// **************************
builder.setAlwaysShow(true); // this is the key ingredient
// **************************
if (mGoogleApiClient != null) {
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi
.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result
.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can
// initialize location
// requests here.
try {
if (Constant.isOnline(mContext)) {
getLocation();
} else
Constant.displayToast(mContext, mContext.getResources().getString(R.string.msg_internet));
} catch (Exception e) {
e.printStackTrace();
}
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be
// fixed by showing the user
// a dialog.
try {
status.startResolutionForResult((Activity) mContext, LOCATION_GET_CODE);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have
// no way to fix the
// settings so we won't show the dialog.
Constant.displayToast(mContext, "Location change issue.");
break;
}
}
});
}
} catch (Exception e) {
e.printStackTrace();
}
}
onActivityResult（）也如下：
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == LOCATION_GET_CODE) {
switch (resultCode) {
case Activity.RESULT_OK:
try {
getLocation();
} catch (Exception e) {
e.printStackTrace();
}
break;
case Activity.RESULT_CANCELED:
// The user was asked to change settings, but chose not to
Toast.makeText(mContext, "Please, turn on GPS and try again", Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
Runtime.getRuntime().gc();
}
的onStop（）方法：
@Override
public void onStop() {
try {
if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
mGoogleApiClient.stopAutoManage(getActivity());
mGoogleApiClient.disconnect();
}
super.onStop();
} catch (Exception e) {
e.printStackTrace();
}
}
在onStart（）方法：
@Override
public void onStart() {
try {
super.onStart();
if (mGoogleApiClient != null) {
mGoogleApiClient.connect();
}
} catch (Exception e) {
e.printStackTrace();
}
}
的onDestroy（）方法：
@Override
public void onDestroy() {
try {
super.onDestroy();
if (mGoogleApiClient != null) {
mGoogleApiClient.stopAutoManage(getActivity());
mGoogleApiClient.disconnect();
}
} catch (Exception e) {
e.printStackTrace();
}
}
现在的问题是，当我从一个片段导航到另一个片段我的应用程序stucks或挂起2到3秒。
可能是什么问题？ 谢谢。