源(osmand)中没有错误
我使用googlecode的eclipse和sdk模拟器2.2 checkout (osmand申请)
我的代码:
public void onCreate(){
super.onCreate();
routingHelper = new RoutingHelper(OsmandSettings.getApplicationMode(OsmandSettings.getPrefs(OsmandApplication.this)), OsmandApplication.this, player);
manager = new ResourceManager(this);
daynightHelper = new DayNightHelper(this);
uiHandler = new Handler();
startApplication();
}
这些都是logcat中的错误:
05-04 07:53:01.807: ERROR / AndroidRuntime (308): FATAL EXCEPTION: main
05-04 07:53:01.807: ERROR / AndroidRuntime (308): java.lang.RuntimeException: Unable to create application net.osmand.activities.OsmandApplication: java.lang.IllegalArgumentException: InputStream can not be null
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has android.app.ActivityThread.handleBindApplication (ActivityThread.java: 4247)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has android.app.ActivityThread.access $ 3000 (ActivityThread.java: 125)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): at $ android.app.ActivityThread H.handleMessage (ActivityThread.java: 2071)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has android.os.Handler.dispatchMessage (Handler.java: 99)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has android.os.Looper.loop (Looper.java: 123)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has android.app.ActivityThread.main (ActivityThread.java: 4627)
05-04 07:53:01.807: ERROR / AndroidRuntime (308): Has java.lang.reflect.Method.invokeNative (Native Method
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at java.lang.reflect.Method.invoke(Method.java:521)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:868)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at dalvik.system.NativeStart.main(Native Method)
05-04 07:53:01.807: ERROR/AndroidRuntime(308): Caused by: java.lang.IllegalArgumentException: InputStream cannot be null
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at javax.xml.parsers.SAXParser.parse(SAXParser.java:185)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.OsmandRenderingRulesParser.parseRenderingRules(OsmandRenderingRulesParser.java: 104)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.BaseOsmandRender.init(BaseOsmandRender.java:41)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.RendererRegistry.loadRenderer(RendererRegistry.java: 116)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.RendererRegistry.loadRenderer(RendererRegistry.java: 103)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.RendererRegistry.getRenderer(RendererRegistry.java: 93)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.RendererRegistry.getRenderer(RendererRegistry.java: 84)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.RendererRegistry.defaultRender(RendererRegistry.java: 54)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.OsmandRenderer.<init>(OsmandRenderer.java:239)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.MapRenderRepositories.<init>(MapRenderRepositories.java: 79)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.ResourceManager.<init>(ResourceManager.java:98)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.activities.OsmandApplication.onCreate(OsmandApplication.java: 51)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java: 969)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4244)
05-04 07:53:01.807: ERROR/AndroidRuntime(308): ... 10 more
答案 0 :(得分:1)
在运行时(执行时),您将null
值传递给某个期望/需要InputStream
(或任何子类)实例的方法。编译器无法检测到这种错误,因此您的源代码会编译。
要调试:在源中找到导致该运行时异常的代码行。在该行,您将找到一些InputStream
变量,您必须分析源以回答为什么和在哪些条件变量保持null
而不是流引用。
从你的堆栈跟踪中我看到这三行给出了问题的提示:
05-04 07:53:01.807: ERROR/AndroidRuntime(308): Caused by: java.lang.IllegalArgumentException: InputStream cannot be null
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at javax.xml.parsers.SAXParser.parse(SAXParser.java:185)
05-04 07:53:01.807: ERROR/AndroidRuntime(308):at net.osmand.render.OsmandRenderingRulesParser.parseRenderingRules(OsmandRenderingRulesParser.java: 104)
应用程序尝试打开xml文件(该名称在日志中未知),并且应用程序找不到此xml。
所以你必须找出需要哪个文件(该文件应包含某种呈现规则)和其中存储为应用程序找到它。解析器加载丢失的文件后,错误就消失了。