Android studio 2.3“调试显示已连接和已断开的线路，但中间没有任何内容" [英] Android studio 2.3 "Debug shows Connected and Disconnected lines but nothing in between"

问题描述

我正在物理设备上测试我的应用

I'm testing my app in a physical device

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，但调试控制台中没有显示任何内容......这是在将android studio更新到2.3之后发生的......

My app crashes due to error, but nothing is displayed in the debug console... this happened after updating android studio to 2.3..

但是当我滚动浏览 Android Monitor 时，我发现了错误消息

But when I scroll through Android Monitor,I found the error messages

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...

I had edited the run configuration too...but that didn't help...

我应该降级android studio吗?

Should i downgrade android studio?

推荐答案

转到运行 -> 编辑配置

Go to Run -> Edit Configurations

第二个标签杂项"

勾选自动显示 logcat"

Check item "Show logcat automatically"

最好也勾选启动前清除日志"项.

it's better to check item "Clear log before launch", too.

并在 Android Monitor logcat 中查看日志和崩溃

and see logs and crashes in Android Monitor logcat

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