如何使用android-support-v7-appcompat_旧版android使用v7的activitycompat-优快云博客

本文链接：https://blog.youkuaiyun.com/hlily2005/article/details/41014925

本文介绍了如何将android-support-v7-appcompat库集成到项目中，强调了直接添加jar包会导致错误，因为v7库包含大量style，需要以library形式导入。详细步骤包括从SDK目录导入library项目，配置项目依赖，并添加v4和v7的支持库jar包。

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天真的以为跟v4一样，把jar包放入自个儿的项目即可，不出各位看官所料，报错了，喜欢看官方的可以看这里 support library setup

当直接把jar包放入，错误信息如下：

11-11 18:11:02.945: W/System.err(9880): java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable
11-11 18:11:02.946: W/System.err(9880): 	at android.support.v7.app.DrawerArrowDrawable.<init>(DrawerArrowDrawable.java:64)
11-11 18:11:02.946: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle$DrawerArrowDrawableToggle.<init>(ActionBarDrawerToggle.java:469)
11-11 18:11:02.946: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle.<init>(ActionBarDrawerToggle.java:222)
11-11 18:11:02.947: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle.<init>(ActionBarDrawerToggle.java:150)
..........
11-11 18:11:02.948: W/System.err(9880): 	at android.app.Activity.performCreate(Activity.java:5251)
11-11 18:11:02.948: W/System.err(9880): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
11-11 18:11:02.949: W/System.err(9880): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2151)
11-11 18:11:02.949: W/System.err(9880): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2236)
11-11 18:11:02.949: W/System.err(9880): 	at android.app.ActivityThread.access$800(ActivityThread.java:138)
11-11 18:11:02.949: W/System.err(9880): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1199)
11-11 18:11:02.949: W/System.err(9880): 	at android.os.Handler.dispatchMessage(Handler.java:102)
11-11 18:11:02.950: W/System.err(9880): 	at android.os.Looper.loop(Looper.java:136)
11-11 18:11:02.950: W/System.err(9880): 	at android.app.ActivityThread.main(ActivityThread.java:5014)
11-11 18:11:02.950: W/System.err(9880): 	at java.lang.reflect.Method.invokeNative(Native Method)
11-11 18:11:02.950: W/System.err(9880): 	at java.lang.reflect.Method.invoke(Method.java:515)
11-11 18:11:02.951: W/System.err(9880): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:806)
11-11 18:11:02.951: W/System.err(9880): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
11-11 18:11:02.951: W/System.err(9880): 	at dalvik.system.NativeStart.main(Native Method)
11-11 18:11:02.952: W/FlurryAgent(9880): Error logged: uncaught
11-11 18:11:02.952: W/FlurryAgent(9880): Ending session
11-11 18:11:02.953: W/System.err(9880): java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable
11-11 18:11:02.953: W/System.err(9880): 	at android.support.v7.app.DrawerArrowDrawable.<init>(DrawerArrowDrawable.java:64)
11-11 18:11:02.954: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle$DrawerArrowDrawableToggle.<init>(ActionBarDrawerToggle.java:469)
11-11 18:11:02.954: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle.<init>(ActionBarDrawerToggle.java:222)
11-11 18:11:02.954: W/System.err(9880): 	at android.support.v7.app.ActionBarDrawerToggle.<init>(ActionBarDrawerToggle.java:150)
.........
11-11 18:11:02.956: W/System.err(9880): 	at android.app.Activity.performCreate(Activity.java:5251)
11-11 18:11:02.956: W/System.err(9880): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
11-11 18:11:02.956: W/System.err(9880): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2151)
11-11 18:11:02.956: W/System.err(9880): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2236)
11-11 18:11:02.957: W/System.err(9880): 	at android.app.ActivityThread.access$800(ActivityThread.java:138)
11-11 18:11:02.957: W/System.err(9880): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1199)
11-11 18:11:02.957: W/System.err(9880): 	at android.os.Handler.dispatchMessage(Handler.java:102)
11-11 18:11:02.957: W/System.err(9880): 	at android.os.Looper.loop(Looper.java:136)
11-11 18:11:02.958: W/System.err(9880): 	at android.app.ActivityThread.main(ActivityThread.java:5014)
11-11 18:11:02.958: W/System.err(9880): 	at java.lang.reflect.Method.invokeNative(Native Method)
11-11 18:11:02.958: W/System.err(9880): 	at java.lang.reflect.Method.invoke(Method.java:515)
11-11 18:11:02.959: W/System.err(9880): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:806)
11-11 18:11:02.959: W/System.err(9880): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
11-11 18:11:02.959: W/System.err(9880): 	at dalvik.system.NativeStart.main(Native Method)

其实错误信息中很赤裸裸的告诉咱了，缺style，关键是为什么会缺呢？

java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable

其实v7中有大量的style，也就是说简单添加jar包并没有引入style，所以只能以library的形式添加到自个儿的项目中，步骤如下：

选择自己SDK下的sdk/extras/android/support/v7/appcompat，导入项目，记得勾选

然后在自己的项目中操作如下，注意红框部分：

然后点击绿色部分，添加v4,v7的jar包：

然后：

没记错的话，应该大功告成了，下课~