存储内部：微调器值和文本视图为整数

Question

Have been googling for 2 days now and I really cant solve this. Anyways, the method that I am using works fine with EditTexts, but not with TextViews and Spinners. When pressing saver-button it crashes .

I am a beginner so detailed explanations are appraciated! Thanks!

The Java saving part:

public void saver(View view) throws Exception

  { 
    String mag = readFields();
      saveToFile(mag);
  }

  private String readFields()
  { 
      int[] inputIDs = new int[]{
                                R.id.email_address,
                                R.id.text_date,
                                R.id.txtTime,
                                R.id.spinner1,
                                R.id.spinner2
                                };
     String outputMag = "";
     for( int id: inputIDs)
     {

         EditText textField = (EditText)findViewById(id);
         outputMag +=  textField.getText().toString() + ",";
     }
     return outputMag.substring(0, outputMag.length() -1 ) + "\n";
  }

  private void saveToFile(String message) throws Exception
  {
      String filePath = getFilesDir().toString() + "/contact.txt";
      FileOutputStream out = new FileOutputStream(filePath, true);
      out.write(message.getBytes());
      out.close();
  }

The whole XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".AddEventActivity" >

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/txtTime"
        android:text="@string/ch_label2" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button2"
        android:layout_alignTop="@+id/text_date"
        android:text="@string/ch_label" />

    <EditText
        android:id="@+id/email_address"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="@string/addeventname"
        android:inputType="text" />

    <TextView
        android:id="@+id/text_date"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/email_address"
        android:layout_marginTop="20dp"
        android:text="text_date txt"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/txtTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/button"
        android:layout_marginTop="18dp"
        android:text="text_time txt"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:entries="@array/country_array"
        android:prompt="@string/select" />

    <Spinner
        android:id="@+id/spinner2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/spinner1"
        android:entries="@array/upprepa_array"
        android:prompt="@string/select2" />

    <Button
        android:id="@+id/buttontospinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/spinner2"
        android:text="@string/button_label" 
        android:onClick="saver" />

LogCat when crashes:

02-11 18:31:12.058: D/dalvikvm(7771): GC_CONCURRENT freed 67K, 2% free 9444K/9607K, paused 9ms+25ms
02-11 18:31:12.338: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:12.478: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:22.419: D/AndroidRuntime(7771): Shutting down VM
02-11 18:31:22.419: W/dalvikvm(7771): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
02-11 18:31:22.459: E/AndroidRuntime(7771): FATAL EXCEPTION: main
02-11 18:31:22.459: E/AndroidRuntime(7771): java.lang.IllegalStateException: Could not execute method of the activity
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.view.View$1.onClick(View.java:3044)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.view.View.performClick(View.java:3511)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.view.View$PerformClick.run(View.java:14105)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.os.Handler.handleCallback(Handler.java:605)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.os.Handler.dispatchMessage(Handler.java:92)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.os.Looper.loop(Looper.java:137)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.app.ActivityThread.main(ActivityThread.java:4424)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at java.lang.reflect.Method.invokeNative(Native Method)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at java.lang.reflect.Method.invoke(Method.java:511)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at dalvik.system.NativeStart.main(Native Method)
02-11 18:31:22.459: E/AndroidRuntime(7771): Caused by: java.lang.reflect.InvocationTargetException
02-11 18:31:22.459: E/AndroidRuntime(7771):     at java.lang.reflect.Method.invokeNative(Native Method)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at java.lang.reflect.Method.invoke(Method.java:511)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at android.view.View$1.onClick(View.java:3039)
02-11 18:31:22.459: E/AndroidRuntime(7771):     ... 11 more
02-11 18:31:22.459: E/AndroidRuntime(7771): Caused by: java.lang.ClassCastException: android.widget.TextView cannot be cast to android.widget.EditText
02-11 18:31:22.459: E/AndroidRuntime(7771):     at apps.rasmusmyhrberg.smartcalendar.AddEventActivity.readFields(AddEventActivity.java:67)
02-11 18:31:22.459: E/AndroidRuntime(7771):     at apps.rasmusmyhrberg.smartcalendar.AddEventActivity.saver(AddEventActivity.java:50)
02-11 18:31:22.459: E/AndroidRuntime(7771):     ... 14 more
02-11 18:31:23.099: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:23.119: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:23.669: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:23.669: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:24.159: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:24.179: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:24.719: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:24.739: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:25.290: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:25.309: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:25.859: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:25.879: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:26.489: I/dalvikvm(7771): threadid=3: reacting to signal 3
02-11 18:31:26.489: I/dalvikvm(7771): Wrote stack traces to '/data/anr/traces.txt'
02-11 18:31:26.549: I/Process(7771): Sending signal. PID: 7771 SIG: 9

Answer 1

You are casting every element to EditText . When one of the inputIDs does not reference an EditText , the element will be a different class. TextView s and Spinner s are not instances of EditText and thus, cannot be cast to EditText .

You will need to look at each of the types you care about and call the appropriate method to retrieve the information you want. Then you can combine them together into an output message.