JAVA-Android错误：应用程序意外停止，请重试

Question

我制作了一个运行正常的应用程序。 但是，当我运行程序时单击“取消”或“确定”按钮时，模拟器没有给我链接到result.java，而是给我“应用程序意外停止，请重试”。这是代码

import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.database.CursorJoiner.Result;
import android.os.Bundle;
import android.view.View;
import android.widget.AutoCompleteTextView;

public class lib_main extends Activity {

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void onAddClick (View botton){

AutoCompleteTextView title = (AutoCompleteTextView)findViewById(R.id.Title);
AutoCompleteTextView author = (AutoCompleteTextView)findViewById(R.id.Author); 
AutoCompleteTextView isbn = (AutoCompleteTextView)findViewById(R.id.ISBN);

Intent intent = new Intent();
intent.setClass(this,Result.class);

intent.putExtra("Title", title.getText().toString());
intent.putExtra("Author", author.getText().toString()); 
intent.putExtra("ISBN", isbn.getText().toString());
startActivity(intent);
}

public void onCancelClick(View botton){



Intent intent = new Intent();
intent.setComponent(new ComponentName(this,Result.class));

intent.putExtra("Cancel","Cancel");
startActivity(intent);
}

}

这是Result.java

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.TextView;

public class Result extends Activity {

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result);

TextView resultText=(TextView)findViewById(R.id.resultText);

Bundle bundle =getIntent().getExtras();
if(bundle.getString("Cancel")!= null)
{resultText.setText("operation cancel");}
else
{  String book =bundle.getString ("Title");
   String title =bundle.getString ("Author");
   String isbn =bundle.getString ("ISBN");
   resultText.setText(
     getString (R.string.resultOk)+""+book+""+ title+""+isbn);


 }
 }
 }

错误日志在设备上写入“运行时无命令输出：'am start -n com.Library.doc / com.Library.doc.lib_main-a android.intent.action.MAIN-c android.intent.category.LAUNCHER'仿真器-5554“

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.Library.doc"
  android:versionCode="1"
  android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".lib_main"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
  <activity android:name=".Result"
              android:label="@string/result">

    </activity>
</application>
<uses-sdk android:minSdkVersion="8" />

谁能帮助我解决这个问题？

Answer 1

快速问题，您是否已注册两项活动？ 如果您仅在清单文件中提供一个，则每次尝试执行涉及未注册活动的操作时都会收到此错误。