基于requestLocationUpdates的Android java.lang.AbstractMethodError
基于requestLocationUpdates的Android java.lang.AbstractMethodError
提问于 2021-01-13 10:35:23
我得到了这个错误java.lang.AbstractMethodError: abstract method "void android.location.LocationListener.onProviderDisabled(java.lang.String)
当我给locationManager.requestLocationUpdates()打电话的时候。我看到了另一个post，其中的答案是重写一些方法，即
@Override
public void onProviderDisabled(@NonNull String provider) {}但问题是，在我的项目中任何地方我都不能覆盖它们。
我简化了代码以帮助读者，而不是两个类，我有一个
MainActivity:
public class MainActivity extends AppCompatActivity {
LocationManager locationManager;
LocationListener locationListener = location -> Toast.makeText(MainActivity.this,location.getLatitude()+" "+location.getLongitude(),Toast.LENGTH_LONG).show();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
findViewById(R.id.button).setOnClickListener(v -> showLoc());
findViewById(R.id.button2).setOnClickListener(v -> locationManager.removeUpdates(locationListener));
}
private void showLoc(){
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 13);
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 2, locationListener);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == 13) {
for (int i = 0; i < permissions.length; i++) {
if (permissions[i].equals(Manifest.permission.ACCESS_FINE_LOCATION) && grantResults[i] == PackageManager.PERMISSION_GRANTED) {
System.out.println("DEBUG Request Permissions ");
showLoc();
}
}
}
}
}异常将抛出在locationManager.requestLocationUpdates上，并与库版本有关。
最后这是我的build.gradle(app)
plugins {
id 'com.android.application'
}
android {
compileSdkVersion 30
buildToolsVersion "30.0.2"
defaultConfig {
applicationId "com.example.app"
minSdkVersion 25
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.2.1'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}Stack Overflow用户
发布于 2021-09-10 05:19:21
重写代码中的方法
...
override fun onProviderDisabled(provider: String) {}
override fun onProviderEnabled(provider: String) {}
override fun onStatusChanged(provider: String?, status: Int, extras: Bundle?) {}
...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/65700139
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