通过js在WebView中获取位置
通过js在WebView中获取位置
提问于 2016-03-25 05:05:17
我正在尝试创建WebView，它将通过js获得全球定位系统本地化，但当我点击按钮，应该显示本地化:在安卓4.1.1(模拟器)：“错误代码2。未能启动地理定位服务在安卓4.1.2(手机)只是没有发生在安卓6.0(模拟器)一样，只是什么也没有发生
我的权限：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>我的设置：
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setGeolocationEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSaveFormData(false);
webView.getSettings().setSavePassword(false);
webView.getSettings().setAppCacheEnabled(true);
webView.getSettings().setDatabaseEnabled(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setGeolocationDatabasePath(getFilesDir().getPath());WebChromeClient：
WebChromeClient webChromeClient = new WebChromeClient(){
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
// callback.invoke(String origin, boolean allow, boolean remember);
callback.invoke(origin, true, false);
}
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture){
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
MainActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), MainActivity.FILECHOOSER_RESULTCODE);
}
public boolean onShowFileChooser (WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams){
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
MainActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), MainActivity.FILECHOOSER_RESULTCODE);
return false;
}
};WebViewClient：
WebViewClient webViewClient = new WebViewClient(){
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url){
progressBar.setVisibility(View.GONE);
webView.setVisibility(View.VISIBLE);
refreshBtn.setVisibility(View.VISIBLE);
}
};最后，我得到了下面这行代码：
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, 0);和js代码(不是我的代码)：
<script>
function getLocationConstant()
{
if(navigator.geolocation)
{
navigator.geolocation.getCurrentPosition(onGeoSuccess,onGeoError);
} else {
alert("Brak obsługi GPS");
}
}
function onGeoSuccess(event)
{
document.getElementById("skad").value = event.coords.latitude+", "+event.coords.longitude;
document.getElementById('szk').click();
}
function onGeoError(event)
{
alert("Error code " + event.code + ". " + event.message);
}
</script>
<input type="text" name="skad" style="width:278px;" id="skad" >回答 1
Stack Overflow用户
回答已采纳
发布于 2016-08-21 22:39:21
我不知道为什么，但现在它起作用了。有简单的webView应用程序使用全球定位系统的代码。
MainActivity：
package com.qiteq.gpswebview;
import android.Manifest;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.webkit.GeolocationPermissions;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView wv = new WebView(this);
wv.loadUrl("http://qiteq.pl/stack/index.html");
setContentView(wv);
ActivityCompat.requestPermissions(this, new String[]{
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_COARSE_LOCATION
}, 0);
wv.getSettings().setJavaScriptEnabled(true);
wv.setWebChromeClient(new WebChromeClient() {
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
}
}清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.qiteq.gpswebview">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>和index.html：
<script>
function getLocationConstant()
{
if(navigator.geolocation)
{
navigator.geolocation.getCurrentPosition(onGeoSuccess,onGeoError);
} else {
alert("No GPS support");
}
}
function onGeoSuccess(event)
{
document.getElementById("location").value = event.coords.latitude+", "+event.coords.longitude;
alert("Success: "+event.coords.latitude+", "+event.coords.longitude);
}
function onGeoError(event)
{
alert("Error code " + event.code + ". " + event.message);
}
</script>
<input type="text" name="location" id="location" style="width:278px;">
<button onclick="getLocationConstant()" >Click</button>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/36209971
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