不可避免的崩溃

Question

我正在创建一个翻译用户文本的应用程序。

首先，我的代码是：

textToReadEdittext.setText(TranslateManager.translate(text, from, to)); 

现在我需要使用翻译后的文本为其他的事情。所以我使用一个字符串变量：

String translatedText = TranslateManager.translate(text, from, to); 
textToReadEdittext.setText(translatedText); 

但现在我的应用程序崩溃了！有来自Eclipse的日志：

03-21 20:24:58.437: E/AndroidRuntime(14867): FATAL EXCEPTION: main 
03-21 20:24:58.437: E/AndroidRuntime(14867): java.lang.IllegalStateException: Could not execute method of the activity 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.view.View$1.onClick(View.java:2072) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.view.View.performClick(View.java:2408) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.view.View$PerformClick.run(View.java:8817) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.os.Handler.handleCallback(Handler.java:587) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.os.Handler.dispatchMessage(Handler.java:92) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.os.Looper.loop(Looper.java:144) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.app.ActivityThread.main(ActivityThread.java:4937) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at java.lang.reflect.Method.invokeNative(Native Method) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at java.lang.reflect.Method.invoke(Method.java:521) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at dalvik.system.NativeStart.main(Native Method) 
03-21 20:24:58.437: E/AndroidRuntime(14867): Caused by: java.lang.reflect.InvocationTargetException 
03-21 20:24:58.437: E/AndroidRuntime(14867): at fr.robinkaminski.devAndroid.projetthalie.activities.KeyboardActivity.keyboardTranslateListener(KeyboardActivity.java:44) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at java.lang.reflect.Method.invokeNative(Native Method) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at java.lang.reflect.Method.invoke(Method.java:521) 
03-21 20:24:58.437: E/AndroidRuntime(14867): at android.view.View$1.onClick(View.java:2067) 
03-21 20:24:58.437: E/AndroidRuntime(14867): ... 11 more 
03-21 20:24:58.437: E/AndroidRuntime(14867): Caused by: java.lang.NullPointerException 
03-21 20:24:58.437: E/AndroidRuntime(14867): at fr.robinkaminski.devAndroid.projetthalie.translate.TranslateManager.translate(TranslateMana ger.java:74) 
03-21 20:24:58.437: E/AndroidRuntime(14867): ... 15 more 

我不明白为什么我的活动崩溃了。你可以帮我吗？

Thx，korax。

Answer 1

您的文字或from或to为null。在传递给TranslateManager之前检查它们，如果其中任何一个为null，则将其打印出来。