java.lang.RuntimeException: Unable to start activity ComponentInfo{}:java.lang.NullPointerException
2014-04-04 11:04
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java.lang.RuntimeException: Unable to start activity ComponentInfo{com.showas.infosystem/com.showas.infosystem.FaceRegister}: java.lang.NullPointerException
Android运行时会出现一个正常的错误。
很显然,该Activity有个空指针错误,错误之前我的代码是这样的:
startRecogBn.setOnClickListener(new OnClickListener(){});
startRecogBn按钮其实没有给它赋值导致该指针为空,出现致命错误。
改后这样的:
startRecogBn = (Button) findViewById(R.id.startRecognition);
startRecogBn.setOnClickListener(new OnClickListener(){});
希望大家不要走弯路。
Android运行时会出现一个正常的错误。
很显然,该Activity有个空指针错误,错误之前我的代码是这样的:
startRecogBn.setOnClickListener(new OnClickListener(){});
startRecogBn按钮其实没有给它赋值导致该指针为空,出现致命错误。
改后这样的:
startRecogBn = (Button) findViewById(R.id.startRecognition);
startRecogBn.setOnClickListener(new OnClickListener(){});
希望大家不要走弯路。
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