Question

在Android Studio中，我的布局文件的设计窗口存在渲染问题。即使在模拟器中，应用程序也能正常工作。这就是它所说的那样，因为我选择了设计窗口：

java.lang.NoClassDefFoundError：无法初始化类 org.osmdroid.tileprovider.constants.OpenStreetMapTileProviderConstants 在 org.osmdroid.tileprovider.MapTileProviderArray.getMapTile（MapTileProviderArray.java:93）在 org.osmdroid.views.overlay.TilesOverlay $ 1.handleTile（TilesOverlay.java:182）在org.osmdroid.util.TileLooper.loop（TileLooper.java:34）at org.osmdroid.views.overlay.TilesOverlay.drawTiles（TilesOverlay.java:161）在 org.osmdroid.views.overlay.TilesOverlay.draw（TilesOverlay.java:148）在 org.osmdroid.views.overlay.DefaultOverlayManager.onDraw（DefaultOverlayManager.java:107）在org.osmdroid.views.MapView.dispatchDraw（MapView.java:996）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:17070）at com.android.layoutlib.bridge.impl.RenderSessionImpl.render（RenderSessionImpl.java:387）在 com.android.layoutlib.bridge.impl.RenderSessionImpl.render（RenderSessionImpl.java:498）在com.android.layoutlib.bridge.Bridge.createSession（Bridge.java:434）在 com.android.ide.common.rendering.LayoutLibrary.createSession（LayoutLibrary.java:350）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:520）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:508）在 com.intellij.openapi.application.impl.ApplicationImpl.runReadAction（ApplicationImpl.java:967）在 com.android.tools.idea.rendering.RenderTask.createRenderSession（RenderTask.java:508）在 com.android.tools.idea.rendering.RenderTask.access $ 600（RenderTask.java:75）在 com.android.tools.idea.rendering.RenderTask $ 3.call（RenderTask.java:620）在 com.android.tools.idea.rendering.RenderTask $ 3.call（RenderTask.java:617）在 com.android.tools.idea.rendering.RenderService.runRenderAction（RenderService.java:371）在 com.android.tools.idea.rendering.RenderTask.render（RenderTask.java:617）在 com.android.tools.idea.rendering.RenderTask.render（RenderTask.java:639）在 com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel $ 7.run（AndroidDesignerEditorPanel.java:519）在 com.intellij.util.ui.update.MergingUpdateQueue.execute（MergingUpdateQueue.java:337）在 com.intellij.util.ui.update.MergingUpdateQueue.execute（MergingUpdateQueue.java:327）在 com.intellij.util.ui.update.MergingUpdateQueue $ 3.run（MergingUpdateQueue.java:271）在 com.intellij.util.ui.update.MergingUpdateQueue.flush（MergingUpdateQueue.java:286）在 com.intellij.util.ui.update.MergingUpdateQueue.flush（MergingUpdateQueue.java:244）在 com.intellij.util.ui.update.MergingUpdateQueue.run（MergingUpdateQueue.java:234）在 com.intellij.util.concurrency.QueueProcessor.runSafely（QueueProcessor.java:238）在com.intellij.util.Alarm $ Request $ 1.run（Alarm.java:352）at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）在java.util.concurrent.FutureTask.run（FutureTask.java:266）at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:617）在java.lang.Thread.run（Thread.java:745）

只要按下刷新按钮，错误消息就会变为：

java.lang.NullPointerException at android.os.storage.StorageManager.getVolumeList（StorageManager.java:922）在 android.os.Environment $ UserEnvironment.getExternalDirs（Environment.java:87）在 android.os.Environment.getExternalStorageDirectory（Environment.java:404）在 org.osmdroid.tileprovider.constants.OpenStreetMapTileProviderConstants。（OpenStreetMapTileProviderConstants.java:24）在 org.osmdroid.tileprovider.MapTileProviderArray.getMapTile（MapTileProviderArray.java:93）在 org.osmdroid.views.overlay.TilesOverlay $ 1.handleTile（TilesOverlay.java:182）在org.osmdroid.util.TileLooper.loop（TileLooper.java:34）at org.osmdroid.views.overlay.TilesOverlay.drawTiles（TilesOverlay.java:161）在 org.osmdroid.views.overlay.TilesOverlay.draw（TilesOverlay.java:148）在 org.osmdroid.views.overlay.DefaultOverlayManager.onDraw（DefaultOverlayManager.java:107）在org.osmdroid.views.MapView.dispatchDraw（MapView.java:996）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:16973）at android.view.ViewGroup.drawChild_Original（ViewGroup.java:3764）at android.view.ViewGroup_Delegate.drawChild（ViewGroup_Delegate.java:61）在android.view.ViewGroup.drawChild（ViewGroup.java:3764）at android.view.ViewGroup.dispatchDraw（ViewGroup.java:3550）at android.view.View.draw（View.java:17070）at com.android.layoutlib.bridge.impl.RenderSessionImpl.render（RenderSessionImpl.java:387）在 com.android.layoutlib.bridge.impl.RenderSessionImpl.render（RenderSessionImpl.java:498）在com.android.layoutlib.bridge.Bridge.createSession（Bridge.java:434）在 com.android.ide.common.rendering.LayoutLibrary.createSession（LayoutLibrary.java:350）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:520）在 com.android.tools.idea.rendering.RenderTask $ 2.compute（RenderTask.java:508）在 com.intellij.openapi.application.impl.ApplicationImpl.runReadAction（ApplicationImpl.java:967）在 com.android.tools.idea.rendering.RenderTask.createRenderSession（RenderTask.java:508）在 com.android.tools.idea.rendering.RenderTask.access $ 600（RenderTask.java:75）在 com.android.tools.idea.rendering.RenderTask $ 3.call（RenderTask.java:620）在 com.android.tools.idea.rendering.RenderTask $ 3.call（RenderTask.java:617）在 com.android.tools.idea.rendering.RenderService.runRenderAction（RenderService.java:371）在 com.android.tools.idea.rendering.RenderTask.render（RenderTask.java:617）在 com.android.tools.idea.rendering.RenderTask.render（RenderTask.java:639）在 com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel $ 7.run（AndroidDesignerEditorPanel.java:519）在 com.intellij.util.ui.update.MergingUpdateQueue.execute（MergingUpdateQueue.java:337）在 com.intellij.util.ui.update.MergingUpdateQueue.execute（MergingUpdateQueue.java:327）在 com.intellij.util.ui.update.MergingUpdateQueue $ 3.run（MergingUpdateQueue.java:271）在 com.intellij.util.ui.update.MergingUpdateQueue.flush（MergingUpdateQueue.java:286）在 com.intellij.util.ui.update.MergingUpdateQueue.flush（MergingUpdateQueue.java:244）在 com.intellij.util.ui.update.MergingUpdateQueue.run（MergingUpdateQueue.java:234）在 com.intellij.util.concurrency.QueueProcessor.runSafely（QueueProcessor.java:238）在com.intellij.util.Alarm $ Request $ 1.run（Alarm.java:352）at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）在java.util.concurrent.FutureTask.run（FutureTask.java:266）at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:617）在java.lang.Thread.run（Thread.java:745）

这是我的主要活动：

        import android.app.Activity;
        import android.os.Bundle;
        import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
        import org.osmdroid.views.MapView;

public class MainActivity extends Activity {
    @Override public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //important! set your user agent to prevent getting banned from the osm servers
        org.osmdroid.tileprovider.constants.OpenStreetMapTileProviderConstants.setUserAgentValue(BuildConfig.APPLICATION_ID);

        MapView map = (MapView) findViewById(R.id.map);
        map.setTileSource(TileSourceFactory.MAPNIK);
    }
}

这是清单

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.x.x_x">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name="com.example.x.x_x.MainActivity" >
        </activity>
    </application>

    <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.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

</manifest>

有谁知道如何解决这个问题？

Answer 1

OSMDroid没有为AndroidStudio / IntelliJ提供能够显示视图的信息。这个特殊错误说的是AndroidStudio正在尝试使用给定的＆＃34; tile＆＃34;进行预览。来自OSRDroid并且还没有提供磁贴（因为它是以编程方式而不是通过XML完成的）。

如果您想查看结果，则必须运行该应用程序。

在Android Studio

1 个答案: