Mac 下 android tools developer 安装问题记录

启动ADT建立project的时候提示错误。

Errors occurred during the build.

Errors running builder 'Android Pre Compiler' on project 'testAndroid'.

java.lang.NullPointerException

和

Errors occurred during the build.

Errors running builder 'Android Resource Manager' on project 'testAndroid'.

java.lang.NullPointerException

该问题是因为没有添加 appcompat_v7 导致的。添加步骤：

一、导入appcompat_v7.

导入"android_sdk/extras/android/support/v7".

二、添加Library.点击你新建的项目.

Proerties——>Android——>Library——>Add——>appcompat_v7.