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MainActivity.java
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MainActivity.java
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package com.here.example.speedlimit;
import android.Manifest;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
import com.here.android.mpa.common.ApplicationContext;
import com.here.android.mpa.common.MapEngine;
import com.here.android.mpa.common.OnEngineInitListener;
import com.here.android.mpa.common.PositioningManager;
import com.here.android.mpa.guidance.NavigationManager;
import java.io.File;
public class MainActivity extends AppCompatActivity {
private final static int REQUEST_CODE_ASK_PERMISSIONS = 1;
private static final String[] RUNTIME_PERMISSIONS = {
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.INTERNET,
Manifest.permission.ACCESS_WIFI_STATE,
Manifest.permission.ACCESS_NETWORK_STATE
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// check Android version to request permissions
if (hasPermissions(this, RUNTIME_PERMISSIONS)) {
initSDK();
} else {
ActivityCompat
.requestPermissions(this, RUNTIME_PERMISSIONS, REQUEST_CODE_ASK_PERMISSIONS);
}
}
private void initSDK() {
// Set path of isolated disk cache
String diskCacheRoot = Environment.getExternalStorageDirectory().getPath()
+ File.separator + ".isolated-here-maps";
// Retrieve intent name from manifest
String intentName = "";
try {
ApplicationInfo ai = getPackageManager().getApplicationInfo(getPackageName(),
PackageManager.GET_META_DATA);
Bundle bundle = ai.metaData;
intentName = bundle.getString("INTENT_NAME");
} catch (PackageManager.NameNotFoundException e) {
Log.e("MainActivity",
"Failed to find intent name, NameNotFound: " + e.getMessage());
}
boolean success = com.here.android.mpa.common.MapSettings.setIsolatedDiskCacheRootPath(
diskCacheRoot, intentName);
if (!success) {
Toast.makeText(this, "Operation 'setIsolatedDiskCacheRootPath' was not successful",
Toast.LENGTH_SHORT).show();
return;
}
ApplicationContext appContext = new ApplicationContext(this);
MapEngine.getInstance().init(appContext, new OnEngineInitListener() {
@Override
public void onEngineInitializationCompleted(Error error) {
if (error == Error.NONE) {
startPositioningManager();
startNavigationManager();
activateSpeedLimitFragment();
} else {
Log.e("MainActivity", " init error: " + error + ", " + error.getDetails(),
error.getThrowable());
}
}
});
}
/**
* Only when the app's target SDK is 23 or higher, it requests each dangerous permissions it
* needs when the app is running.
*/
private static boolean hasPermissions(Context context, String... permissions) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission)
!= PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
switch (requestCode) {
case REQUEST_CODE_ASK_PERMISSIONS: {
for (int index = 0; index < permissions.length; index++) {
if (grantResults[index] != PackageManager.PERMISSION_GRANTED) {
/*
* If the user turned down the permission request in the past and chose the
* Don't ask again option in the permission request system dialog.
*/
if (!ActivityCompat
.shouldShowRequestPermissionRationale(this, permissions[index])) {
Toast.makeText(this, "Required permission " + permissions[index]
+ " not granted. "
+ "Please go to settings and turn on for sample app",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Required permission " + permissions[index]
+ " not granted", Toast.LENGTH_LONG).show();
}
}
}
initSDK();
break;
}
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
@Override
protected void onResume() {
super.onResume();
if (MapEngine.isInitialized()) {
MapEngine.getInstance().onResume();
startPositioningManager();
}
}
@Override
protected void onPause() {
if (MapEngine.isInitialized()) {
stopPositioningManager();
}
super.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
}
private void startPositioningManager() {
boolean positioningManagerStarted = PositioningManager.getInstance().start(PositioningManager.LocationMethod.GPS_NETWORK);
if (!positioningManagerStarted) {
//handle error here
}
}
private void stopPositioningManager() {
PositioningManager.getInstance().stop();
}
private void startNavigationManager() {
NavigationManager.Error navError = NavigationManager.getInstance().startTracking();
if (navError != NavigationManager.Error.NONE) {
//handle error navError.toString());
}
}
private void activateSpeedLimitFragment() {
SpeedLimitFragment speedLimitFragment = (SpeedLimitFragment)
getSupportFragmentManager().findFragmentById(R.id.speedLimitFragment);
if (speedLimitFragment != null) {
speedLimitFragment.startListeners();
}
}
}