Android Studio使用百度地图SDK的导航功能时，无法获取导航View

2020-03-06 04:20:06 754 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Android Studio 百度地图定位、轨迹及所在位置与标注marker的距离 1. 在百度地图开放平台注册应用获得应用AK 如果获取SHA1不对，可以下载 MCodeCheck.apk 安装在测试手机上查看SHA1 2. 在百度地图开放平台下载所需的SDK 3. 将BaiduLBS_Android.jar 放在libs下，将armeabi armeabi-v7a arm64 x86 x86_64 文件夹copy至 jniLibs文件夹下 4. 在Andro 阅读详情

2020-03-06 16:14:32.013 2296-2296/com.example.arnavigation E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.arnavigation, PID: 2296
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
at com.baidu.platform.comapi.walknavi.g.a.G(WalkUIController.java:849)
at com.baidu.platform.comapi.walknavi.g.a.H(WalkUIController.java:869)
at com.baidu.platform.comapi.walknavi.g.a.<init>(WalkUIController.java:352)
at com.baidu.platform.comapi.walknavi.b.b(WNavigator.java:585)
at com.baidu.mapapi.walknavi.controllers.a.a.a(WalkNaviManager.java:189)
at com.baidu.mapapi.walknavi.WalkNavigateHelper.onCreate(WalkNavigateHelper.java:344)
at com.example.arnavigation.MainActivity$1$1.onRoutePlanSuccess(MainActivity.java:178)
at com.baidu.mapapi.walknavi.controllers.a.c.b(WalkNaviManager.java:425)
at com.baidu.platform.comapi.wnplatform.j.e.handleMessage(WRoutePlaner.java:116)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
这是错误信息，按照官网的格式写的代码，不知道有什么问题

...全文

不用写触发器！帆软填报报表自动记录创建/修改时间的终极方案本文详细介绍了帆软填报报表中无需编写数据库触发器，即可自动记录数据创建时间和修改时间的终极方案。该方案利用帆软内置函数和单元格条件属性，在应用层实现日期自动生成，有效规避了触发器带来的权限、维护和部署难题，为数据填报提供了更轻量、灵活且易于维护的解决方案。阅读详情

hhh小菜鸡

Android 80,490 成员 91,375 内容

+ 关注 + 加入社区

切换为时间正序

qq_53117729 2022-03-27

打赏
举报

您好，请问您解决这个问题了吗？怎么解决的？

KEVI~N 2021-02-18

打赏
举报

请问解决了吗

duxikuan 2021-02-05

打赏
举报

添加如下文件（官方demo中） /* * Copyright (C) 2020 Baidu, Inc. All Rights Reserved. */ package com.baidu.bikenavi_demo; import android.annotation.SuppressLint; import android.content.Context; import android.content.pm.ApplicationInfo; import android.util.Log; import java.lang.reflect.Method; import static android.os.Build.VERSION.PREVIEW_SDK_INT; import static android.os.Build.VERSION.SDK_INT; import static android.os.Build.VERSION_CODES.P; public class ReflectHelper { private static final String TAG = "ReflectHelper"; private static final int UNKNOWN = -9999; private static final int ERROR = -20; private static Object sVmRuntime; private static Method setHiddenApiExemptions; private static int unsealed = UNKNOWN; static { try { Method forName = Class.class.getDeclaredMethod("forName", String.class); Method getDeclaredMethod = Class.class.getDeclaredMethod("getDeclaredMethod", String.class, Class[].class); Log.e(TAG, "getDeclaredMethod:" + getDeclaredMethod); Class<?> vmRuntimeClass = (Class<?>) forName.invoke(null, "dalvik.system.VMRuntime"); Method getRuntime = (Method) getDeclaredMethod.invoke(vmRuntimeClass, "getRuntime", null); setHiddenApiExemptions = (Method) getDeclaredMethod.invoke(vmRuntimeClass, "setHiddenApiExemptions", new Class[]{String[].class}); sVmRuntime = getRuntime.invoke(null); } catch (Throwable e) { Log.e(TAG, "reflect bootstrap failed:", e); } } public static void unseal(Context context) { if (SDK_INT < 28) { // Below Android P, ignore return; } // try exempt API first. if (exemptAll()) { return; } if (context == null) { return; } ApplicationInfo applicationInfo = context.getApplicationInfo(); synchronized (ReflectHelper.class) { if (unsealed != UNKNOWN) { return; } unsealed = 0; if ((SDK_INT == P && PREVIEW_SDK_INT > 0) || SDK_INT > P) { return; } // Android P, we need to sync the flags with ApplicationInfo // We needn't to this on Android Q. try { @SuppressLint("PrivateApi") Method setHiddenApiEnforcementPolicy = ApplicationInfo.class .getDeclaredMethod("setHiddenApiEnforcementPolicy", int.class); setHiddenApiEnforcementPolicy.invoke(applicationInfo, 0); } catch (Throwable e) { e.printStackTrace(); unsealed = ERROR; } } } /** * make the method exempted from hidden API check. * * @param method the method signature prefix. * @return true if success. */ public static boolean exempt(String method) { return exempt(new String[]{method}); } /** * make specific methods exempted from hidden API check. * * @param methods the method signature prefix, such as "Ldalvik/system", "Landroid" or even "L" * @return true if success */ private static boolean exempt(String... methods) { if (sVmRuntime == null || setHiddenApiExemptions == null) { return false; } try { setHiddenApiExemptions.invoke(sVmRuntime, new Object[]{methods}); return true; } catch (Throwable e) { return false; } } /** * Make all hidden API exempted. * * @return true if success. */ private static boolean exemptAll() { return exempt(new String[]{"L"}); } } Application中做如下操作 public class BNaviDemoApplication extends Application { @Override protected void attachBaseContext(Context base) { super.attachBaseContext(base); ReflectHelper.unseal(base); } @Override public void onCreate() { super.onCreate(); SDKInitializer.initialize(this); } }

qq_53117729 2022-03-27

@duxikuan 添加到项目的哪里啊，文件名有说法吗。。。

Soul_TT 2020-11-06

打赏
举报

老哥找到解决办法了吗

bdmh 2020-03-06

打赏
举报

findViewById没有找到对象，你看看是不是你的id有问题，仔细对一下，一般都是低级错误导致的

Android Studio使用百度地图SDK的导航功能时，无法获取导航View

相关推荐