Android指南针仅显示视图，但未在少数设备上按预期移动。
现在这令人沮丧。我刚刚完成了一个显示指南针的应用程序。它在我的三星s4和其他一些设备上工作正常，但是当我发送 apk 文件进行测试时，最糟糕的情况就是罗盘不能用于少数设备，包括客户端设备。直到那时，我尝试了2种不同类型的代码，我在stackoverflow和其他一些网站上找到了这些代码。所有这些都在我的s4上工作正常但在客户端的设备上却没有。
我正在分享此代码。
我已经在一些Android 6.0设备上测试了这段代码，它运行得很好。我完全没有得到错误的地方。
任何帮助都将受到高度赞赏
public class QiblaActivity extends AppCompatActivity implements SensorEventListener {
private ImageView qiblaNSEW, qiblaIcon;
private float currentDegree = 0f;
private float currentDegree1 = 0f;
RelativeLayout back_Rel, bulb_Rel;
// device sensor manager
private SensorManager mSensorManager;
TextView degreeTV;
AdRequest adRequest;
double angle;
GPSTracker gpsTracker;
Location location;
private static final int PERMS_REQUEST_CODE = 123;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qibla);
Utils.statusBarColor(getWindow(), QiblaActivity.this);
back_Rel = (RelativeLayout) findViewById(R.id.back_Rel);
bulb_Rel = (RelativeLayout) findViewById(R.id.bulb_Rel);
bulb_Rel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(QiblaActivity.this, QuranBulbActivity.class);
startActivity(intent);
}
});
back_Rel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
}
);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (hasPermissions())
{
gpsTracker = new GPSTracker(this);
if (gpsTracker.canGetLocation()) {
startQibla();
}
}
else
{
requestPerms();
}
} else {
gpsTracker = new GPSTracker(this);
if (gpsTracker.canGetLocation()) {
startQibla();
} else {
gpsTracker.showSettingsAlert();
}
}
}
private void startQibla() {
qiblaNSEW = (ImageView) findViewById(R.id.qibla_n_s_e_w);
qiblaIcon = (ImageView) findViewById(R.id.qibla_icon);
degreeTV = (TextView) findViewById(R.id.degree_TV);
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
setAds();
angle = getAngle();
gpsTracker = new GPSTracker(this);
location = gpsTracker.getLocation();
Log.d("angle", angle + "");
}
@Override
protected void onResume() {
super.onResume();
mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),
SensorManager.SENSOR_DELAY_GAME);
/* mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE),
SensorManager.SENSOR_DELAY_NORMAL);*/
}
@Override
protected void onPause() {
super.onPause();
mSensorManager.unregisterListener(this);
}
@Override
public void onSensorChanged(SensorEvent sensorEvent) {
float degree = Math.round(sensorEvent.values[0]);
degreeTV.setText((Float.toString(Math.round(degree - angle)) + "").replace(".0", "").replace("-", ""));
// create a rotation animation (reverse turn degree degrees)
RotateAnimation ra = new RotateAnimation(
currentDegree,
-degree,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF,
0.5f);
// how long the animation will take place
ra.setDuration(210);
// set the animation after the end of the reservation status
ra.setFillAfter(true);
// Start the animation
qiblaNSEW.startAnimation(ra);
currentDegree = -degree;
float tempDegreeNorth = degree;
if (tempDegreeNorth > 180) {
tempDegreeNorth = 360 - tempDegreeNorth;
} else {
tempDegreeNorth = 0 - tempDegreeNorth;
}
Log.d(" north - angle - total", tempDegreeNorth + " - " + angle + " - " + Math.round(tempDegreeNorth + angle));
RotateAnimation raa = new RotateAnimation(
Math.round(tempDegreeNorth + angle),
0.0f,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF,
0.5f);
// how long the animation will take place
raa.setDuration(210);
// set the animation after the end of the reservation status
raa.setFillAfter(true);
qiblaIcon.startAnimation(raa);
currentDegree1 = -tempDegreeNorth;
}
private double getAngle() {
GPSTracker gpsTracker = new GPSTracker(this);
double lat1 = toRad(gpsTracker.getLocation().getLatitude());
double lat2 = toRad(21.4266700);
double lon1 = toRad(gpsTracker.getLocation().getLongitude());
double lon2 = toRad(39.8261100);
double dLon = (lon2 - lon1);
double y = sin(dLon) * cos(lat2);
double x = cos(lat1) * sin(lat2) - sin(lat1) * cos(lat2) * cos(dLon);
double brng = Math.toDegrees(atan2(y, x));
brng = (brng + 360);
brng = (brng > 360) ? (brng - 360) : brng;
return brng;
}
double toRad(double value) {
value = value * Math.PI / 180;
return value;
}
@Override
public void onAccuracyChanged(Sensor sensor, int i) {
}
private void setAds() {
final AdView adViews = (AdView) this.findViewById(R.id.adView);
adRequest = new AdRequest.Builder()
.addTestDevice("253A8ECF2C80597926D6578953E69959").build();
adViews.loadAd(adRequest);
}
private boolean hasPermissions() {
int res = 0;
//string array of permissions,
String[] permissions = new String[]{Manifest.permission.ACCESS_FINE_LOCATION};
for (String perms : permissions) {
res = checkCallingOrSelfPermission(perms);
if (!(res == PackageManager.PERMISSION_GRANTED)) {
return false;
}
}
return true;
}
private void requestPerms() {
String[] permissions = new String[]{Manifest.permission.ACCESS_FINE_LOCATION};
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(permissions, PERMS_REQUEST_CODE);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
boolean allowed = true;
switch (requestCode) {
case PERMS_REQUEST_CODE:
for (int res : grantResults) {
// if user granted all permissions.
allowed = allowed && (res == PackageManager.PERMISSION_GRANTED);
}
break;
default:
// if user not granted permissions.
allowed = false;
break;
}
if (allowed) {
//user granted all permissions we can perform our task.
} else {
// we will give warning to user that they haven't granted permissions.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)) {
Toast.makeText(this, "GPS Permissions denied.", Toast.LENGTH_SHORT).show();
}
}
}
}
}