Android studio 2.3“调试显示连接和断开的线路，但中间没有任何内容”

Question

我正在物理设备上测试我的应用

在调试运行

    Console 

$ adb push C:\Users\arjun\AndroidStudioProjects\Scol\app\build\outputs\apk\app-debug.apk /data/local/tmp/com.example.arjun.scol
$ adb shell pm install -r "/data/local/tmp/com.example.arjun.scol"
    pkg: /data/local/tmp/com.example.arjun.scol

Success


$ adb shell am start -n "com.example.arjun.scol/com.example.arjun.scol.login.Login" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER -D

Waiting for application to come online: com.example.arjun.scol | com.example.arjun.scol.test
Waiting for application to come online: com.example.arjun.scol | com.example.arjun.scol.test

Connecting to com.example.arjun.scol
Connected to the target VM, address: 'localhost:8600', transport: 'socket'
Disconnected from the target VM, address: 'localhost:8600', transport: 'socket'

我的应用程序因错误而崩溃，但...中没有显示任何内容debug console...这发生在updating android studio to 2.3..

但是当我滚动浏览时Android Monitor，我发现了错误消息

03-05 12:50:40.380 6608-6608/com.example.arjun.scol E/AndroidRuntime: FATAL EXCEPTION: main
                                                                     android.database.sqlite.SQLiteException: near ".": syntax error (code 1): , while compiling: CREATE TABLE IF NOT EXISTS teacer_homework(s.no. INTEGER AUTO INCREMENT, subject1 TEXT, subject2 TEXT, subject3 TEXT, subject4 TEXT, subject5 TEXT, subject6 TEXT, subject7 TEXT, date TEXT );
 at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1108)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:681)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:589)
  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
  at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1769)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1700)
at com.example.arjun.scol.database.MyDBHandler.classhomework(MyDBHandler.java:246)
at com.example.arjun.scol.SubjectSelection$2.onClick(SubjectSelection.java:59)
at android.view.View.performClick(View.java:4261)
at android.view.View$PerformClick.run(View.java:17420)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:177)
at android.app.ActivityThread.main(ActivityThread.java:4944)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
0

我也编辑了运行配置......但这没有帮助......

我应该降级android studio吗？

Answer 1

转到运行-> 编辑配置

第二个标签“杂项”

选中“自动显示 logcat”项

最好也检查项目“启动前清除日志”。

并在 Android Monitor logcat 中查看日志和崩溃