Question

我想在我的Android应用程序中集成一个地图。但我刚从基础开始，我已经遇到了崩溃/错误。

我刚刚从演示项目中复制了一些代码，但仍然没有运气。

Logcat：

08-14 16:19:55.703: E/AndroidRuntime(30065): FATAL EXCEPTION: GLThread 787
08-14 16:19:55.703: E/AndroidRuntime(30065): java.lang.NullPointerException
08-14 16:19:55.703: E/AndroidRuntime(30065):    at com.skobbler.ngx.map.MapRenderer.onSurfaceCreated(SourceFile:487)
08-14 16:19:55.703: E/AndroidRuntime(30065):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1509)
08-14 16:19:55.703: E/AndroidRuntime(30065):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1248)

我已经研究过，但我还没有找到任何解决方案。请帮忙。

这是我的代码： MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

SKLogging.enableLogs(true);
File externalDir = getExternalFilesDir(null);
if (externalDir != null) {`enter code here`
    mapresDirPath = externalDir + "/SKMaps/";
} else {
    mapresDirPath = getFilesDir() + "/SKMaps/";
}

if (!new File(mapresDirPath).exists()) {
    new SKPrepareMapTextureThread(this, mapresDirPath, "SKMaps.zip", this).start();
    copyOtherResources();
    prepareMapCreatorFile();
 } else {
 Toast.makeText(MainActivity.this, "Map resources copied in a previous run", Toast.LENGTH_SHORT).show();
 prepareMapCreatorFile();
        initializeLibrary();
        finish();
        startActivity(new Intent(MainActivity.this, MapActivity.class));
    }



}

private void initializeLibrary() {
    SKMapsInitSettings initSettings = new SKMapsInitSettings();
    initSettings.setMapResourcesPaths(mapresDirPath, new SKMapViewStyle(mapresDirPath + "daystyle/", "daystyle.json"));

    final SKAdvisorSettings advisorSettings = initSettings.getAdvisorSettings();
    advisorSettings.setLanguage("en");
    advisorSettings.setAdvisorVoice("en");
    advisorSettings.setPlayInitialAdvice(true);
    advisorSettings.setPlayAfterTurnInformalAdvice(true);
    advisorSettings.setPlayInitialVoiceNoRouteAdvice(true);
    initSettings.setAdvisorSettings(advisorSettings);

    SKVersioningManager.getInstance().setMapUpdateListener(this);
    SKMaps.getInstance().initializeSKMaps(this, initSettings, API_KEY);
}

@Override
public void onMapTexturesPrepared(boolean prepared) {
    initializeLibrary();
    runOnUiThread(new Runnable() {

        @Override
        public void run() {
            Toast.makeText(MainActivity.this, "Map resources were copied", Toast.LENGTH_SHORT).show();


            finish();
            startActivity(new Intent(MainActivity.this, MapActivity.class));
        }
    });
}

MapActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_map);

    SKMapViewHolder mapViewHolder = (SKMapViewHolder) findViewById(R.id.map_surface_holder);
    mapView = mapViewHolder.getMapSurfaceView();

    mapView.getMapSettings().setMapPanningEnabled(true);
    mapView.getMapSettings().setMapZoomingEnabled(true);
    mapView.getMapSettings().setInertiaPanningEnabled(true);


    SKVersioningManager.getInstance().setMapUpdateListener(this);
}

Answer 1

我遇到了同样的问题，我在他们的支持论坛上发了一个答案：

您好，

在我的Android应用程序中实现Skobbler，我陷入了半小时的崩溃我无法理解。   在初始化部分的DemoApp之后，我在地图显示错误之前一直崩溃：

java.lang.NullPointerException
    at com.skobbler.ngx.map.MapRenderer.onSurfaceCreated( SourceFile:487)
    at android.opengl.GLSurfaceView$GLThread.guardedRun(G LSurfaceView.java:1509)
    at android.opengl.GLSurfaceView$GLThread.run(GLSurfac eView.java:1248)

由于错误根本不是自我解释，我从包com.skobbler.ngx.map调查了文件MapRenderer，并找到了我崩溃了，因为我没有实现一个地图监听器（this.s，在下面一行），哪个类名试图在日志中显示。

public final void onSurfaceCreated(GL10 arg1, EGLConfig paramEGLConfig)
{
    SKLogging.writeLog("MapRenderer", "onSurfaceCreated before LOCK ", 2);
    synchronized (V) {
        SKLogging.writeLog("MapRenderer", "onSurfaceCreated" + this.s.getClass().getName(), 2); // <== Line 487

您可能忘记在记录之前检查this.s的非nullity，并且因为在您的doc中没有将其描述为强制性的实现这个监听器，我认为你应该纠正这个问题，或者在文档中对其进行精确处理。

http://forum.skobbler.com/showthread.php/6554-Android-Resolution-for-NullPointerException-onSurfaceCreated(SourceFile-487)?p=17601#post17601

希望有所帮助！

tl：dr：

SKMapSurfaceView mapView = mapViewContainer.getMapSurfaceView();
mapView.setMapSurfaceListener(new SKMapSurfaceListener() {...});

在Android中使用Skobbler显示地图时出错

1 个答案: