引言

最近项目中要使用到USB摄像头的功能，然后就找到了UVCCamera这个开源项目，clone下来后，编译运行要报错，下面带你一步步解决错误，成功运行项目。

第一个错误：

1	Could not resolve com.serenegiant:common:2.12.4

解决方法：
打开project的build.gradle，替换掉原来的maven url，如下：

allprojects {
	repositories {
//    	google()
		maven { url 'https://maven.google.com' }
		jcenter()
		//maven { url 'http://raw.github.com/saki4510t/libcommon/master/repository/' }
		//使用下面的maven url即可
		maven { url 'https://gitee.com/liuchaoya/libcommon/raw/master/repository/' }
	}
}

第二个错误：

1
2
3

CreateProcess error=2, 系统找不到指定的文件。
Execution failed for task ':libuvccamera:ndkBuild'.
A problem occurred starting process 'command 'null/ndk-build.cmd''

解决方法：
打开设置，确保如图已下载NDK，没有下载的就选一个下载，然后点击如下图标，打开设置，设置好NDK的位置即可。

太新的版本可能会报错，建议适当降低NDK版本，我这边使用的是：ndk\21.4.7075529

第三个错误：

1 2	Execution failed for task ':libuvccamera:ndkBuild'. Process 'command 'G:\win7\developSoftware\androidSDK\ndk\21.0.6113669/ndk-build.cmd'' finished with non-zero exit value 2

解决方法：

打开Application.mk，修改APP_ABI，
修改前 APP_ABI := armeabi armeabi-v7a x86 mips
修改后 APP_ABI := armeabi-v7a x86

第四个错误：

Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
       at android.support.v7.app.AppCompatDelegateImplV9.createSubDecor(AppCompatDelegateImplV9.java:354)
       at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:323)
       at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:284)
       at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
       at com.serenegiant.usbcameratest.MainActivity.onCreate(MainActivity.java:61)

解决方法：

打开AndroidManifest.xml，修改application的theme：
修改前 android:theme=”@style/AppTheme”
修改后 android:theme=”@style/Theme.AppCompat”

第五个错误：

 Caused by: android.view.InflateException: Binary XML file line #32 in com.serenegiant.usbcameratest:layout/activity_main: Binary XML file line #32 in com.serenegiant.usbcameratest:layout/activity_main: Error inflating class com.serenegiant.widget.SimpleUVCCameraTextureView
     Caused by: android.view.InflateException: Binary XML file line #32 in com.serenegiant.usbcameratest:layout/activity_main: Error inflating class com.serenegiant.widget.SimpleUVCCameraTextureView
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:858)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1010)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:965)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:1127)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1088)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:686)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:538)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
        at com.serenegiant.usbcameratest.MainActivity.onCreate(MainActivity.java:61)
        at android.app.Activity.performCreate(Activity.java:7893)
        at android.app.Activity.performCreate(Activity.java:7880)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3287)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3461)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2048)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:227)
        at android.app.ActivityThread.main(ActivityThread.java:7573)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:953)
     Caused by: java.lang.UnsupportedOperationException: TextureView doesn't support displaying a background drawable
com.serenegiant.usbcameratest E/AndroidRuntime:     at android.view.TextureView.setBackgroundDrawable(TextureView.java:326)
        at android.view.View.setBackground(View.java:23033)
        at android.view.View.<init>(View.java:5869)
        at android.view.View.<init>(View.java:5265)
        at android.view.TextureView.<init>(TextureView.java:166)
        at com.serenegiant.widget.SimpleUVCCameraTextureView.<init>(SimpleUVCCameraTextureView.java:50)
        at com.serenegiant.widget.SimpleUVCCameraTextureView.<init>(SimpleUVCCameraTextureView.java:46)