设置Android Studio导入类时不自动使用全限定名

本文介绍如何在Android Studio中调整自动导入包的设置,避免使用全限定类名,实现更简洁的代码风格。

今天用 Android Studio2.2 写代码时发现每次需要自动导入包时总是会对每个字段或注解使用全限定名,如下图:
这里写图片描述

导致写完后的代码很难看,本人有点小小的强迫症,还是喜欢Eclipse的那种自动导入包的风格,于是百度google一把,终于在StackOverflow上找到了答案,操作步骤如下:
(1)File->Setting->Editor->General->Auto Import,勾选上[Add unambiguous imports on the fly],如图:这里写图片描述
(2)File->Setting->Editor->Code Style->Java,把选项 [Use fully qualified class names]选项上的勾去掉:这里写图片描述

通过这两步即可实现自动导入包,而不是对每个字段或注解自动使用类的全限定名,如图:
这里写图片描述


参考文章:http://stackoverflow.com/questions/22701789/android-studio-import-class-action-adds-fully-qualified-name

11-12 05:46:20.488 24541 24541 E AndroidRuntime: Process: com.ts.carplaypermission, PID: 24541 11-12 05:46:20.488 24541 24541 E AndroidRuntime: java.lang.NoSuchFieldError: No static field AlertDialog of type [I in class Lcom/google/android/material/R$styleable; or its superclasses (declaration of 'com.google.android.material.R$styleable' appears in /data/app/~~9lQPacn6DrdoUmFHqUm6Gg==/com.ts.carplaypermission-pUN-bcNqHOFZc8SXyB60Qw==/base.apk!classes2.dex) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.FlymeAlertController.<init>(FlymeAlertController.java:312) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog$MediumAlertDialogController.<init>(MediumAlertDialog.java:142) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog.create(MediumAlertDialog.java:46) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.AlertDialog.<init>(AlertDialog.java:151) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog.<init>(MediumAlertDialog.java:41) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder$MediumDialogFactory.newDialog(MediumDialogBuilder.java:252) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder$MediumDialogFactory.newDialog(MediumDialogBuilder.java:244) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.AlertDialog$Builder.create(AlertDialog.java:1590) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder.create(MediumDialogBuilder.java:208) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.ts.carplaypermission.FirstActivity.showPolicyDialog(FirstActivity.java:251) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.ts.carplaypermission.FirstActivity.onCreate(FirstActivity.java:57) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8307) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8286) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1420) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3637) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3802) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2318) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:201) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.os.Looper.loop(Looper.java:288) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7948) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548) 11-12 05:46:20.488 24541 24541 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:939) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: FATAL EXCEPTION: main 11-12 05:46:34.106 28283 28283 E AndroidRuntime: Process: com.ts.carplaypermission, PID: 28283 11-12 05:46:34.106 28283 28283 E AndroidRuntime: java.lang.NoSuchFieldError: No static field AlertDialog of type [I in class Lcom/google/android/material/R$styleable; or its superclasses (declaration of 'com.google.android.material.R$styleable' appears in /data/app/~~9lQPacn6DrdoUmFHqUm6Gg==/com.ts.carplaypermission-pUN-bcNqHOFZc8SXyB60Qw==/base.apk!classes2.dex) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.FlymeAlertController.<init>(FlymeAlertController.java:312) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog$MediumAlertDialogController.<init>(MediumAlertDialog.java:142) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog.create(MediumAlertDialog.java:46) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.AlertDialog.<init>(AlertDialog.java:151) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumAlertDialog.<init>(MediumAlertDialog.java:41) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder$MediumDialogFactory.newDialog(MediumDialogBuilder.java:252) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder$MediumDialogFactory.newDialog(MediumDialogBuilder.java:244) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.AlertDialog$Builder.create(AlertDialog.java:1590) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.flyme.auto.design.dialog.MediumDialogBuilder.create(MediumDialogBuilder.java:208) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.ts.carplaypermission.FirstActivity.showPolicyDialog(FirstActivity.java:251) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.ts.carplaypermission.FirstActivity.onCreate(FirstActivity.java:57) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8307) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:8286) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1420) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3637) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3802) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:101) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2318) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:106) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:201) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.os.Looper.loop(Looper.java:288) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7948) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548) 11-12 05:46:34.106 28283 28283 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:939)
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