Question

我是Android新手，一直在线关注Google的基础培训课程。在开始时，minSdkVersion设置为8，但现在我需要将其更改为使用Holo主题http://developer.android.com/training/basics/actionbar/styling.html

问题是，在我将minSdkVersion更新为11或14之后，我的应用程序一直在崩溃....

我更改了build.gradle（Module：app）中的minSdkVersion。

defaultConfig {
    applicationId "com.example.cindy.myfirstapp"
    minSdkVersion 14
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}

这是logcat错误：

 09-29 18:33:49.901  22164-22164/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.cindy.myfirstapp, PID: 22164
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cindy.myfirstapp/com.example.cindy.myfirstapp.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:309)
            at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:278)
            at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:252)
            at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
        at com.example.cindy.myfirstapp.MainActivity.onCreate(MainActivity.java:20)
        at android.app.Activity.performCreate(Activity.java:5990)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        

    

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

java.lang.RuntimeException：无法启动活动 ComponentInfo {com.example.cindy.myfirstapp / com.example.cindy.myfirstapp.MainActivity}： java.lang.IllegalStateException：您需要使用Theme.AppCompat 这个活动的主题（或后代）。

日志说明了一切。在Theme.AppCompat

中使用AndroidManifest.xml

Answer 2

尝试在您的Android清单中导入此行＆＃39;机器人：主题=＆＃34; @风格/ AppTheme＆＃34;＆＃39;：

<application
    android:allowBackup="true"
    android:icon="@drawable/hub_gcm_100"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

    ....

</application

并在你的gradle中导入正确的依赖：

compile 'com.android.support:support-v13:23.0.0'
compile 'com.android.support:support-v4:23.0.0'
compile 'com.android.support:appcompat-v7:23.0.0'

告诉我，如果我能帮助你，祝你好运！

更改minSdkVersion后Android应用程序崩溃

2 个答案: