Jul*_*ard 1 android http dart flutter
我想要做的是:使用谷歌地图 api 获取数据,然后将数据传递到下一个屏幕。
有什么问题:它在 iOS 模拟器上运行良好,它设法进入下一个屏幕并用数据填充地图(打印位置、“yay”、http 状态代码和“loopyays”)。但是在 android 模拟器上,它只打印位置和“yay”,并挂在那里,不会导航到下一个屏幕。
什么地方出了错?:/ 请帮帮我..
class _LoadingScreenState extends State<LoadingScreen> {
void getUserLocation() async {
try {
Position position = await Geolocator()
.getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
print(position);
Set<Marker> markers = {};
String url =
'https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=${position.latitude},${position.longitude}&maxprice=4&radius=1500&type=restaurant&keyword=cruise&key=AIzaSyDVzxxxxxxxxxxxxxxxxxxx';
print('yay');
http.Response data = await http.get(url);
print(data.statusCode);
var resultList = jsonDecode(data.body)['results'];
for (Map i in resultList) {
var coords = (i['geometry']['location']);
print('loopyay');
markers.add(Marker(
markerId: MarkerId(i['name']),
position: LatLng(coords['lat'], coords['lng'])));
}
Navigator.push(context, MaterialPageRoute(builder: (context) {
return UserLocationScreen(
userLocation: position,
markers: markers,
);
}));
} catch (e) {
print(e);
}
}
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我的配置
androidmapsdk在我的 google 控制台上激活class _LoadingScreenState extends State<LoadingScreen> {
void getUserLocation() async {
try {
Position position = await Geolocator()
.getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
print(position);
Set<Marker> markers = {};
String url =
'https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=${position.latitude},${position.longitude}&maxprice=4&radius=1500&type=restaurant&keyword=cruise&key=AIzaSyDVzxxxxxxxxxxxxxxxxxxx';
print('yay');
http.Response data = await http.get(url);
print(data.statusCode);
var resultList = jsonDecode(data.body)['results'];
for (Map i in resultList) {
var coords = (i['geometry']['location']);
print('loopyay');
markers.add(Marker(
markerId: MarkerId(i['name']),
position: LatLng(coords['lat'], coords['lng'])));
}
Navigator.push(context, MaterialPageRoute(builder: (context) {
return UserLocationScreen(
userLocation: position,
markers: markers,
);
}));
} catch (e) {
print(e);
}
}
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dependencies {
classpath 'com.android.tools.build:gradle:3.3.1'
classpath 'com.google.gms:google-services:4.2.0'
}
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android.enableJetifier=true
android.useAndroidX=true
org.gradle.jvmargs=-Xmx1536M
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在 Android 9 pie 中,默认不允许 http 请求。
解决方案:请在您的AndroidManifest.xml文件中更新它,如下所示。
<application
...
android:usesCleartextTraffic="true">
... // Your current code.
</application>
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祝你有美好的一天。
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