Android异常处理

1 已安装了存在签名冲突的同名数据包

通过软件管理，将即将安装的XXX.apk的同名软件卸载，然后进入到安装包中，点击XXX.apk

2 拷贝文件夹失败

                             

打开设置，选择存储，找到USB计算机连接，大容量连接电脑

3 NDK location not valid in preferences

该原因是NDK没有配置的原因

 

4 Unable to launch cygpath

 IsCygwin on the path?] java.io.IOException: Cannot run program"cygpath": CreateProcess error=2, 系统找不到指定的文件。

 

5.5

Description      Resource Path Location   Type

The container 'Android Dependencies'references non existing library'D:\Javaworkplace\appcompat_v7\bin\appcompat_v7.jar'         helloworld                  Buildpath         Build Path Problem

 

 

emulator:ERROR: Unable to load VM from snapshot. The snapshot has been saved for adifferent hardware configuration.

 

5 eclipse菜单没有AndroidVirtual Device Manager

在eclipse中的window→Customize Perspective→Command Groupsavailability→Available commandgroups

 

然后找到，通过setXXX才可以

6 Android Dependencies问题

错误问题：

Description      Resource Path Location   Type

The container 'Android Dependencies'references non existing library'D:\svn\_test_android\appcompat_v7\bin\appcompat_v7.jar'         hello                   Buildpath         Build Path Problem

解决方案：选择项目Project + clean即可

 

6.1解决历程

这些问题是否与build path有关

是否是Java Build Path问题，如下：

结论：结果发现其实Android 5.1.1可以不勾选，保持默认即可

7 Unable to resolve target 'android-19' until the SDK is

描述如下：Description  Resource Path Location   Type

Unable toresolve target 'android-19' until the SDK is loaded.        anddt                 Unknown Android Target Problem

截图如下：

7.1解决里程碑

1、打开android sdk manager，步骤如图：

2.查看开发环境安装的sdk的对应API号码，下图中的对号码为19，参考下图，找到你的环境版本号

3.打开导入工程目录下的project.properties文件，打开工具为记事本

4.找到android-xx这一行，将xx数字修改改为步骤二中得到的数字，这时候再打开工程就可以了

# Project target.

target=android-19

修改后的结果：

# Project target.

target=android-18

 

详细的解释：

default.properties 里的target选取对应的

或右键工程属性 properties =》 android => android build target 选择库

也就是库API选择不正确

我们应该选择哪个库值得思考！！！

8 The project was not built since its build path isincomplete

详细描述：

The project wasnot built since its build path is incomplete. Cannot find the class file forjava.lang.Object. Fix the build path then try building this project   anddt                 Unknown Java Problem

The typejava.lang.Object cannot be resolved. It is indirectly referenced from required.class files     Common.java      

解决方案：

看看project -- BuildAutomatically有没有勾上?如果没有,勾上以后,clean一下,重启eclipse

 

9 Could not delete '/test/bin/classes/cn'.

Description      Resource Path Location   Type

The project was not built due to"Could not delete '/test/bin/classes/cn'.". Fix the problem, thentry refreshing this project and building it since it may be inconsistent   anddt                 Unknown Java Problem

解决方案：进入到test/bin/classes/目录，手动删除cn目录

 

Description      Resource Path Location   Type

The project cannot be built until buildpath errors are resolved     test                 Unknown Java Problem

 

Description      Resource Path Location   Type

R cannot beresolved to a variable  MainActivity.java     /feng/src/com/example/feng line 13      JavaProblem

 

Errors occurred during thebuild.

Errors running builder 'Android Package Builder' on project'appcompat_v7'.

Problems encountered while deleting resources.

Could not delete 'D:\doc\_hello\appcompat_v7\bin\appcompat_v7.jar'.

Problems encountered while deleting files.

Could not delete: D:\doc\_hello\appcompat_v7\bin\appcompat_v7.jar.

Problems encountered while deleting resources.

Could not delete 'D:\doc\_hello\appcompat_v7\bin\appcompat_v7.jar'.

Problems encountered while deleting files.

Could not delete: D:\doc\_hello\appcompat_v7\bin\appcompat_v7.jar.

10Activity not started, itscurrent task has been brought to the front

原因分析：因为你的模拟器中还有东西在运行，也就是你要运行的activity已经有一个在模拟器中运行了。不要以认为模拟器退出到桌面了就没有东西在跑了。在你调试的时候异常关闭的程序有可能就有activity在运行。

解决方法：project->clean。