Java 打开GPS功能webview
我的网站有一个需要访问用户位置的webView,它通过按下按钮并在表单中显示位置来访问用户位置。我需要从webView中找到一种方法,要求用户在单击按钮时打开gps(它有Java 打开GPS功能webview,java,android,webview,geolocation,gps,Java,Android,Webview,Geolocation,Gps,我的网站有一个需要访问用户位置的webView,它通过按下按钮并在表单中显示位置来访问用户位置。我需要从webView中找到一种方法,要求用户在单击按钮时打开gps(它有id=“locate button”)。我如何在Android studio中做到这一点 我的代码: MainActivity.java public class MainActivity extends AppCompatActivity { private WebView webview; @Override prote
id=“locate button”
)。我如何在Android studio中做到这一点
我的代码:
MainActivity.java
public class MainActivity extends AppCompatActivity {
private WebView webview;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActivityCompat.requestPermissions(this, new String[]{
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION
}, 0);
webview = (WebView) findViewById(R.id.webView);
webview.setWebViewClient(new WebViewClient());
webview.getSettings().setAppCacheEnabled(true);
webview.getSettings().setDatabaseEnabled(true);
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setGeolocationEnabled(true);
webview.setWebChromeClient(new WebChromeClient() {
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
webview.setOverScrollMode(WebView.OVER_SCROLL_NEVER);
webview.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url)
{
// hide element by class name
webview.loadUrl("javascript:(function() { " + "document.getElementsByClassName('menu-icone-container')[0].style.display='none'; })()");
}
});
webview.loadUrl("http://www.example.it");
}
编辑:
我找到了一种方法来检查gps是否已关闭,并提示用户进行gps设置,但我只能在应用程序启动时调用此方法,而不能在按下按钮时调用
public void CheckEnableGPS() {
String provider = Settings.Secure.getString(getContentResolver(),
Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if (!provider.contains("gps")){
showSettingAlert();
}
}
public void showSettingAlert()
{
AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);
alertDialog.setTitle("Impostazioni GPS");
alertDialog.setMessage("Per ottenere la posizione corrente il GPS deve essere attivo, attivarlo?");
alertDialog.setPositiveButton("Impostazioni", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
});
alertDialog.setNegativeButton("Annulla", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
当您的活动启动时,您可以要求用户打开其GPS。 第一步是创建位置请求
LocationRequest mLocationRequest = new LocationRequest();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(1000);
locationRequest.setFastestInterval(5000);
然后,您必须创建位置请求设置:
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
接下来检查是否满足当前位置设置:
SettingsClient client = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task = client.checkLocationSettings(builder.build());
SettingsClient=LocationServices.getSettingsClient(此);
Task Task=client.checkLocationSettings(builder.build());
接下来,提示用户更改位置设置
task.addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
@Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
}
});
task.addOnFailureListener(this, new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
if (e instanceof ResolvableApiException) {
// Location settings are not satisfied, but this can be fixed
// by showing the user a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
ResolvableApiException resolvable = (ResolvableApiException) e;
resolvable.startResolutionForResult(MainActivity.this,
REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException sendEx) {
// Ignore the error.
}
}
}
});
task.addOnSuccessListener(这个,新的OnSuccessListener(){
@凌驾
成功时公共无效(位置设置响应位置设置响应){
//满足所有位置设置。客户端可以初始化
//这里有位置请求。
// ...
}
});
task.addOnFailureListener(这是新的OnFailureListener(){
@凌驾
public void onFailure(@NonNull异常e){
if(可解析APIexception的实例){
//不满足位置设置,但可以修复此问题
//通过向用户显示一个对话框。
试一试{
//通过调用startResolutionForResult()显示对话框,
//并在onActivityResult()中检查结果。
ResolvableApiException resolvable=(ResolvableApiException)e;
可解析。开始解决结果(main activity.this,
请求检查设置);
}catch(IntentSender.SendIntentException sendEx){
//忽略错误。
}
}
}
});
请查看Officel文档:使用此代码提示用户启用位置设置,用户无需打开手机的设置窗口:
private void displayLocationSettingsRequest(Context context) {
GoogleApiClient googleApiClient = new GoogleApiClient.Builder(context)
.addApi(LocationServices.API).build();
googleApiClient.connect();
final String TAG = "YOUR-TAG-NAME";
final int REQUEST_CHECK_SETTINGS = 0x1;
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(10000);
locationRequest.setFastestInterval(10000 / 2);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
Log.i(TAG, "All location settings are satisfied.");
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
Log.i(TAG, "Location settings are not satisfied. Show the user a dialog to upgrade location settings ");
try {
// Show the dialog by calling startResolutionForResult(), and check the result
// in onActivityResult().
status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
Log.i(TAG, "PendingIntent unable to execute request.");
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
Log.i(TAG, "Location settings are inadequate, and cannot be fixed here. Dialog not created.");
break;
}
}
});
}
private void displayLocationSettingsRequest(上下文){
GoogleAppClient GoogleAppClient=新的GoogleAppClient.Builder(上下文)
.addApi(LocationServices.API).build();
googleApiClient.connect();
最后一个字符串TAG=“YOUR-TAG-NAME”;
最终整数请求检查设置=0x1;
LocationRequest LocationRequest=LocationRequest.create();
locationRequest.setPriority(locationRequest.PRIORITY\u高精度);
locationRequest.setInterval(10000);
locationRequest.SetFastTestInterval(10000/2);
LocationSettingsRequest.Builder=新建LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult=LocationServices.SettingsApi.checkLocationSettings(GoogleAppClient,builder.build());
result.setResultCallback(新的ResultCallback(){
@凌驾
公共void onResult(位置设置结果){
最终状态状态=result.getStatus();
开关(status.getStatusCode()){
案例位置设置StatusCodes.SUCCESS:
Log.i(标记“满足所有位置设置”);
打破
案例位置设置StatusCodes.RESOLUTION_要求:
Log.i(标记“不满足位置设置。向用户显示一个对话框以升级位置设置”);
试一试{
//通过调用startResolutionForResult()显示对话框,并检查结果
//在onActivityResult()中。
status.startResolutionForResult(MainActivity.this,请求检查设置);
}catch(IntentSender.sendtintentexe){
Log.i(标记“PendingEvent无法执行请求”);
}
打破
案例位置设置StatusCodes.SETTINGS\u CHANGE\u不可用:
Log.i(标记“位置设置不足,无法在此修复。未创建对话框”);
打破
}
}
});
}
最佳解决方案,完美地为我工作
单击附近的按钮或任何地理位置许可按钮、链接时,WebView将请求GPS许可
1.首先,我们必须使用WebChromeClient调用GeolocationPermissions.Callback
webView.setWebChromeClient(new WebChromeClient() {
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
Log.i(TAG, "onGeolocationPermissionsShowPrompt()");
final boolean remember = false;
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this, R.style.MyAlertDialogStyle);
builder.setTitle("Locations");
builder.setIcon(R.mipmap.ic_launcher);
builder.setMessage("Would like to use your Current Location ")
.setCancelable(true).setPositiveButton("Allow", (dialog, id) -> {
// origin, allow, remember
callback.invoke(origin, true, remember);
displayLocationSettingsRequest();
int result = ContextCompat.checkSelfPermission(getBaseContext(), Manifest.permission.ACCESS_COARSE_LOCATION);
if (result == PackageManager.PERMISSION_GRANTED) {
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION}, 101);
}
}).setNegativeButton("Don't Allow", (dialog, id) -> {
// origin, allow, remember
callback.invoke(origin, false, remember);
});
AlertDialog alert = builder.create();
alert.show();
}
}
displayLocationSettingsRequest()代码>
private void displayLocationSettingsRequest() {
GoogleApiClient googleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API).build();
googleApiClient.connect();
final String TAG = "YOUR-TAG-NAME";
final int REQUEST_CHECK_SETTINGS = 0x1;
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(10000);
locationRequest.setFastestInterval(10000 / 2);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(result1 -> {
final Status status = result1.getStatus();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
Log.i(TAG, "All location settings are satisfied.");
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
Log.i(TAG, "Location settings are not satisfied. Show the user a dialog to upgrade location settings ");
try {
// Show the dialog by calling startResolutionForResult(), and check the result
// in onActivityResult().
status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
Log.i(TAG, "PendingIntent unable to execute request.");
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
Log.i(TAG, "Location settings are inadequate, and cannot be fixed here. Dialog not created.");
break;
}
});
}
将此添加到活动中
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case 1: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
看看
android.webkit.JavascriptInterface
注释。我不记得如何准确地使用它,所以我没有把它作为一个答案。@dedda1994我读过关于它的文章,它可能是答案,但我无法让它工作。非常感谢,但我仍然需要一种方法,当我的webview中的一个按钮被点击时使用它……非常感谢你,您节省了很多时间,访问该位置时,此特定的弹出窗口不会出现。
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case 1: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}