android google directions

private void startDirections(Data data) {
Location location = CurrentValue.getDevLocation(this);
String saddr = String.format("%f,%f", location.getLatitude(),
location.getLongitude());
String daddr = data.getBusiness().getAddress() + ", "
+ getCszForSearch(data);
if (data.getLatE6() != 0
&& data.getLonE6() != 0) {
daddr = String.format("%f,%f",
cdata.getLatE6() / 1000000f, data.getLonE6() / 1000000f);
}

startGoogleDirections(this, saddr, daddr);
}

public static void startGoogleDirections(Activity activity, String saddr,
String daddr) {

Uri.Builder builder = new Uri.Builder();
builder.encodedPath("http://maps.google.com/maps")
.appendQueryParameter("f", "d")
.appendQueryParameter("hl", "en");
// from can be null
if (!isEmpty(saddr)) {
builder.appendQueryParameter("saddr", saddr);
}
// to can be null
if (!isEmpty(daddr)) {
builder.appendQueryParameter("daddr", daddr);
}

Uri uri = Uri.parse(builder.build().toString());
Intent i = new Intent(Intent.ACTION_VIEW, uri);
if (i != null) {
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
& Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
activity.startActivityForResult(i,0);
}
}

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