使用百度地图API时,应用总是停止启动,然后自动关闭。
我在TextView中使用的时候没有问题,经纬度可以正常显示。但是,我调用mapview的时候,再次打开程序,就是无法启动了。
下面是我的代码,谢谢各位帮忙解决。
这是MainAcitivity==================
package com.example.a45010.lbstest;
import android.Manifest;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.MapView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
public LocationClient mLocationClient;
private TextView positionText;
private MapView mapView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获得定位客户端实例
mLocationClient=new LocationClient(getApplicationContext());
mLocationClient.registerLocationListener(new MyLocationListener());
SDKInitializer.initialize(getApplicationContext());
setContentView(R.layout.activity_main);
mapView=(MapView)findViewById(R.id.bmapView);
positionText=(TextView)findViewById(R.id.position_text_view);
List<String> permissionList=new ArrayList<>();//权限数组
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission
.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED){
permissionList.add(Manifest.permission.ACCESS_FINE_LOCATION);
}
if (ContextCompat.checkSelfPermission(MainActivity.this,Manifest.permission
.READ_PHONE_STATE)!=PackageManager.PERMISSION_GRANTED){
permissionList.add(Manifest.permission.READ_PHONE_STATE);
}
if (ContextCompat.checkSelfPermission(MainActivity.this,Manifest.permission
.WRITE_EXTERNAL_STORAGE)!=PackageManager.PERMISSION_GRANTED){
permissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
if (!permissionList.isEmpty()){
//链表转换成数组
String[] permissions=permissionList.toArray(new String[permissionList.size()]);
ActivityCompat.requestPermissions(MainActivity.this,permissions,1);
}else {
//如果权限链表为空,说明所有权限已经获得,直接请求位置服务
requestLocation();
}
}
private void requestLocation(){
initLocation();
mLocationClient.start();
}
private void initLocation(){
LocationClientOption option=new LocationClientOption();
//设置重新扫描间隔
option.setScanSpan(5000);
option.setIsNeedAddress(true);
mLocationClient.setLocOption(option);
}
@Override
protected void onResume(){
super.onResume();
mapView.onResume();
}
@Override
protected void onPause(){
super.onPause();
mapView.onPause();
}
@Override
protected void onDestroy(){
super.onDestroy();
mLocationClient.stop();
mapView.onDestroy();
}
@Override
public void onRequestPermissionsResult(int requestCode,String[] permissions,int[] grantResults){
switch (requestCode){
case 1:
if (grantResults.length>0){
for(int result:grantResults){
if (result!=PackageManager.PERMISSION_GRANTED){
Toast.makeText(this,"必须同意所有权限才可以使用这个程序",
Toast.LENGTH_SHORT).show();
finish();
return;
}
}
requestLocation();
}else {
Toast.makeText(this,"未知错误",Toast.LENGTH_SHORT).show();
finish();
}
default:
break;
}
}
public class MyLocationListener implements BDLocationListener{
@Override
public void onReceiveLocation(BDLocation location){
StringBuilder currentPosition=new StringBuilder();
currentPosition.append("纬度:").append(location.getLatitude()).append("\n");
currentPosition.append("经度:").append(location.getLongitude()).append("\n");
currentPosition.append("国家:").append(location.getCountry()).append("\n");
currentPosition.append("省:").append(location.getProvince()).append("\n");
currentPosition.append("市:").append(location.getCity()).append("\n");
currentPosition.append("区:").append(location.getDistrict()).append("\n");
currentPosition.append("街:").append(location.getStreet()).append("\n");
currentPosition.append("定位方式:");
if ((location.getLocType())==BDLocation.TypeGpsLocation){
currentPosition.append("GPS");
}else if ((location.getLocType())==BDLocation.TypeNetWorkLocation){
currentPosition.append("网络");
}
positionText.setText(currentPosition);
}
}
}
这是layout==============
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.a45010.lbstest.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/position_text_view"
android:visibility="gone"/>
<com.baidu.mapapi.map.MapView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/bmapView"
android:clickable="true"/>
</LinearLayout>
这是manifest====================
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.a45010.lbstest">
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data
android:name="com.baidu.lbsapi.API_KEY"
android:value="vtwtl8XH9Bf6GDLaig3lyaZ5Ui4bYdSK"/>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name="com.baidu.location.f" android:enabled="true"
android:process=":remote">
</service>
</application>
</manifest>