相关疑难解决方法(0)

我已经开发了这个小项目好几天了但是今天突然间,Android Studio开始给我这个错误

Error:Execution failed for task ':app:processDebugManifest'.
> Manifest merger failed : uses-sdk:minSdkVersion 14 cannot be smaller than version 14 declared in library com.android.support:support-v4:21.0.0-rc1

我明白这是因为它正在尝试编译Android-L库.我想要它编译的版本是旧版本,但它不会.无论我输入哪个版本,它都会一直给我上述错误.这是依赖项.

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:20.+'
    compile 'com.android.support:support-v4:20.+'
}

UPDATE

我刚刚安装了Android Studio Beta并将我的依赖项更改为下面的Eugen建议.但是,无论我指定哪个版本的appcompat支持版本,同步项目都会产生相同的错误.它每次同步时都会出现此错误

uses-sdk:minSdkVersion 14 cannot be smaller than version L declared in library com.android.support:support-v4:21.0.0-rc1

我更新的依赖项

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:19.+'
    compile 'com.android.support:support-v4:19.+'
}

更新2

我认为我没有正确理解Android Studio的依赖系统.我刚从依赖项中删除了appcompat和support,它仍然给了我同样的错误.我是否必须从某处删除最初包含的库？

的build.gradle

*注意 - 我再次添加了这两个库并尝试同步,以防万一.但没有变化.

apply plugin: 'android'

android {
    compileSdkVersion 19 …

我正在使用android的数据绑定库来查看库项目中的视图

我在根gradle文件中添加了以下行

classpath 'com.android.databinding:dataBinder:1.0-rc1'

并在模块的gradle文件中启用了dataBinding,如下所示

apply plugin: 'com.android.databinding'
...
...
android {
....
  dataBinding {
      enabled = true
  }
}

我已经在我的库项目中以及使用此库的主机应用程序中启用了multiDex但是在启动库的活动时我得到了这个堆栈的错误跟踪

java.lang.NoClassDefFoundError: Failed resolution of: Landroid/databinding/DataBinderMapper;
    at android.databinding.DataBindingUtil.<clinit>(DataBindingUtil.java:31)
    at sdk.ui.activities.MyActivity.onCreate(MyActivity.java:76)
    at android.app.Activity.performCreate(Activity.java:6280)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1116)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2534)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2647)
    at android.app.ActivityThread.-wrap11(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1502)
    at android.os.Handler.dispatchMessage(Handler.java:111)
    at android.os.Looper.loop(Looper.java:207)
    at android.app.ActivityThread.main(ActivityThread.java:5763)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:749)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.databinding.DataBinderMapper" on path: DexPathList[[zip file "/data/app/testApp.dev-1/base.apk"],nativeLibraryDirectories=[/data/app/testApp.dev-1/lib/arm64, /data/app/testApp.dev-1/base.apk!/lib/arm64-v8a, /vendor/lib64, /system/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
    at android.databinding.DataBindingUtil.<clinit>(DataBindingUtil.java:31) …

java.lang.NoClassDefFoundError: android.databinding.DataBinderMapper
        at android.databinding.DataBindingUtil.<clinit>(DataBindingUtil.java:31)
        at com.example.MainActivity.onCreate(MainActivity.java:13)
        at android.app.Activity.performCreate(Activity.java:5231)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5001)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
        at dalvik.system.NativeStart.main(Native Method)

我希望这是一个错误，有人遇到类似的问题吗？我解压缩classes.jar了exploded-arr文件夹，但是找不到DataBinderMapper课程。

任何解决方法/修复将不胜感激。