大概是升级了 2.2.1 之后，编译的时候 Gradle 就下面的错误。
在 stackoverflow 上看到也有这样的情况，根据回答我试过下列的方法但是均无效
- 1 、检查是否有 png 后缀实际是 jpg 编码的图片
- 2 、尝试修改 SLAVE_AAPT_TIMEOUT 环境变量时间
- 3 、更换 SDK-TOOLS 从 23 换到了 25
- 4 、移动项目到根目录
这个错误不是每次都出现，但是概率跟高， 10 次编译有 8 次出现这种情况。。
如果出错后 gradle 会一直 loading...直到地老天荒（10.1假期，电脑没关loading...了7天）
只有结束 java.exe 进程，然后重新编译有可能会通过。
不知道大家有没有遇到相同的情况~
Exception in thread "png-cruncher_74" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_84" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_82" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_80" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_76" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_81" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "png-cruncher_77" java.lang.RuntimeException: Timed out while waiting for slave aapt process, make sure the aapt execute at D:\Android-sdk\build-tools\23.0.3\aapt.exe can run successfully (some anti-virus may block it) or try setting environment variable SLAVE_AAPT_TIMEOUT to a value bigger than 10 seconds
at com.android.builder.png.AaptProcess.waitForReady(AaptProcess.java:108)
at com.android.builder.png.QueuedCruncher$1.creation(QueuedCruncher.java:120)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:203)
at java.lang.Thread.run(Thread.java:745)
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