Question

当我在虚拟设备上测试我的应用时，我遇到了以下错误：

E/AndroidRuntime: FATAL EXCEPTION: main
              Process: com.attendancekeeper.mohilkhare.attendancekeeper, PID: 4150
              java.lang.IllegalStateException: Could not execute method for android:onClick
                  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
                  at android.view.View.performClick(View.java:5198)
                  at android.view.View$PerformClick.run(View.java:21147)
                  at android.os.Handler.handleCallback(Handler.java:739)
                  at android.os.Handler.dispatchMessage(Handler.java:95)
                  at android.os.Looper.loop(Looper.java:148)
                  at android.app.ActivityThread.main(ActivityThread.java:5417)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
               Caused by: java.lang.reflect.InvocationTargetException
                  at java.lang.reflect.Method.invoke(Native Method)
                  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
                  at android.view.View.performClick(View.java:5198) 
                  at android.view.View$PerformClick.run(View.java:21147) 
                  at android.os.Handler.handleCallback(Handler.java:739) 
                  at android.os.Handler.dispatchMessage(Handler.java:95) 
                  at android.os.Looper.loop(Looper.java:148) 
                  at android.app.ActivityThread.main(ActivityThread.java:5417) 
                  at java.lang.reflect.Method.invoke(Native Method) 
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
               Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1
                  at android.content.res.Resources.getText(Resources.java:312)
                  at android.widget.TextView.setText(TextView.java:4417)
                  at com.attendancekeeper.mohilkhare.attendancekeeper.MainActivity.displayMessageOnnumOfTotalDays(MainActivity.java:32)
                  at com.attendancekeeper.mohilkhare.attendancekeeper.MainActivity.present(MainActivity.java:25)
                  at java.lang.reflect.Method.invoke(Native Method) 
                  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
                  at android.view.View.performClick(View.java:5198) 
                  at android.view.View$PerformClick.run(View.java:21147) 
                  at android.os.Handler.handleCallback(Handler.java:739) 
                  at android.os.Handler.dispatchMessage(Handler.java:95) 
                  at android.os.Looper.loop(Looper.java:148) 
                  at android.app.ActivityThread.main(ActivityThread.java:5417) 
                  at java.lang.reflect.Method.invoke(Native Method) 
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

当我将以下内容添加到MainActivity.java时出现此错误：

一个函数，它增加了几个整数，并使用文本视图ID将值显示到目标文本视图。

任何人都可以解释为什么会发生这种情况？我是新来的。

Answer 1

这是因为你在TextView中设置了int值。因为setText（）只接受String值或String的资源ID（实际上是int）。

变化

displayMessageOnnumOfTotalDays.setText(totalDays);

displayMessageOntv1.setText(daysAttended);

要

 displayMessageOnnumOfTotalDays.setText(String.valueOf(totalDays));

 displayMessageOntv1.setText(String.valueOf(daysAttended));

Answer 2

您可以使用以下方式。

displayMessageOnnumOfTotalDays.setText(totalDays+"");
displayMessageOntv1.setText(daysAttended+"");

应用程序崩溃因为onclick？

2 个答案: