valueOf函數有問題

如果語句正常工作。它的代碼如下所示valueOf函數有問題

if (getInput1.getText() != null) { 
    float answer2 = Float.valueOf(getInput2.getText().toString()); 
    float answer3 = Float.valueOf(getInput3.getText().toString()); 
    float answer= answer2/answer3; 
    textOut1.setText(String.valueOf(answer)); 
}

但後來我添加第二個if語句（下面的代碼）

EditText getInput1 = (EditText) findViewById(R.id.etInput1); 
EditText getInput2 = (EditText) findViewById(R.id.etInput2); 
EditText getInput3 = (EditText) findViewById(R.id.etInput3);     

if (getInput1.getText() != null) { 
    float answer2 = Float.valueOf(getInput2.getText().toString()); 
    float answer3 = Float.valueOf(getInput3.getText().toString()); 
    float answer= answer2/answer3; 
    textOut1.setText(String.valueOf(answer)); 
}     

if (getInput2.getText()!= null){  
    float answer1 = Float.valueOf(getInput1.getText().toString()); 
    float answer3 = Float.valueOf(getInput3.getText().toString()); 
    float answer= answer1*answer3; 
    textOut1.setText(String.valueOf(answer)); 
}

logcat的說，出問題時valueOf功能。哪裏可能是一個錯誤？

logcat中顯示：

08-18 17:10:28.918: INFO/ActivityManager(569): Displayed activity com.easyPhys.start/.mechanics: 261 ms 
08-18 17:10:29.648: INFO/ActivityManager(569): Starting activity: Intent { action=com.easyPhys.start.velocity comp={com.easyPhys.start/com.easyPhys.start.velocity} } 
08-18 17:10:30.008: INFO/ActivityManager(569): Displayed activity com.easyPhys.start/.velocity: 366 ms 
08-18 17:10:47.308: WARN/KeyCharacterMap(755): No keyboard for id 0 
08-18 17:10:47.308: WARN/KeyCharacterMap(755): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
08-18 17:10:48.338: DEBUG/dalvikvm(704): GC freed 971 objects/73712 bytes in 126ms 
08-18 17:10:51.348: DEBUG/AndroidRuntime(755): Shutting down VM 
08-18 17:10:51.348: WARN/dalvikvm(755): threadid=3: thread exiting with uncaught exception (group=0x4000fe70) 
08-18 17:10:51.348: ERROR/AndroidRuntime(755): Uncaught handler: thread main exiting due to uncaught exception 
08-18 17:10:51.368: ERROR/AndroidRuntime(755): java.lang.NumberFormatException: 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at org.apache.harmony.luni.util.FloatingPointParser.parseFloat(FloatingPointParser.java:296) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at java.lang.Float.parseFloat(Float.java:327) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.easyPhys.start.velocity$1.onClick(velocity.java:86) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.View.performClick(View.java:2179) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.View.onTouchEvent(View.java:3828) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.widget.TextView.onTouchEvent(TextView.java:6291) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.View.dispatchTouchEvent(View.java:3368) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1707) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1197) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.app.Activity.dispatchTouchEvent(Activity.java:1993) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1691) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1525) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.os.Handler.dispatchMessage(Handler.java:99) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.os.Looper.loop(Looper.java:123) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at android.app.ActivityThread.main(ActivityThread.java:3948) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at java.lang.reflect.Method.invokeNative(Native Method) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at java.lang.reflect.Method.invoke(Method.java:521) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) 
08-18 17:10:51.368: ERROR/AndroidRuntime(755):  at dalvik.system.NativeStart.main(Native Method)

來源

2011-08-18 Laurynas G

在函數調用之前打印發送到Float.valueOf的字符串以查看它們的值 – MByD

請花費一些努力來設置您的代碼的格式它易於閱讀。 – razlebe

我包括logcat和我的程序部隊關閉 –

如果事情是錯的Float.ValueOf方法，你應該得到一個NumberFormatException。因此，您在ValueOf（）中輸入的值無法轉換爲浮點數

來源

2011-08-18 17:02:42 Kevin

這個。這個錯誤是由你的'valueOf（）'語句中不可用的東西造成的。讓Log.i（）在解釋它們之前打印出值，看看有什麼不對。 – Nicholas

它不能是numberformatexception，因爲我輸入5或1 –

valueOf函數有問題

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