我运行我的Android应用程序时遇到问题（v 4.0.3）我的应用程序停止工作。它基本上是XML解析应用程序
这里是主要活动
package cz.jiri.podlipny.weather_design;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//new Stahni().execute();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private class Stahni extends AsyncTask<Void, Void, ParserXMLObject>{
@Override
protected ParserXMLObject doInBackground(Void... params){
ParserXMLObject XMLdata = null;
try {
URL url = new URL("http://www.anddev.org/images/tut/basic/parsingxml/example.xml");
//dostane SAXparser ze SUXFactory
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
//Načte XML ze SAX parseru
XMLReader xr = sp.getXMLReader();
//vytvoříme obsluhu handle k XML
XMLHandler xmlHandle = new XMLHandler();
xr.setContentHandler(xmlHandle);
//postará se o parsování dat z XML
xr.parse(new InputSource(url.openStream()));
//samotná XMLdata
XMLdata = xmlHandle.getParsedData();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
//parser catch
e.printStackTrace();
} catch (SAXException e) {
// SAX exception
e.printStackTrace();
} catch (IOException e) {
// IOException z openStreamu
e.printStackTrace();
}
return XMLdata;
}
protected void onPostExecute(ParserXMLObject xmldata){
TextView teplota = (TextView) findViewById(R.id.CurTemp);
teplota.setText(xmldata.toString());
}
}
public void kliknuto(View v){
new Stahni().execute();
}
}
这里是parserXML对象
package cz.jiri.podlipny.weather_design;
public class ParserXMLObject {
/*
* z XML dat vytváří objekt se kterým se dále pracuje
*/
private String extractedString = null;
private int extractedInt = 0;
public String getExtractedString() {
return extractedString;
}
public void setExtractedString(String extractedString) {
this.extractedString = extractedString;
}
public int getExtractedInt() {
return extractedInt;
}
public void setExtractedInt(int extractedInt) {
this.extractedInt = extractedInt;
}
public String toString(){
return "ExtractedString = " + this.extractedString
+ "nExtractedInt = " + this.extractedInt;
}
}
这里是解析器的句柄器
package cz.jiri.podlipny.weather_design;
import java.util.jar.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class XMLHandler extends DefaultHandler {
// ===========================================================
// Fields
// ===========================================================
private boolean in_outertag = false;
private boolean in_innertag = false;
private boolean in_mytag = false;
private ParserXMLObject myParsedExampleDataSet = new ParserXMLObject();
// ===========================================================
// Getter & Setter
// ===========================================================
public ParserXMLObject getParsedData() {
return this.myParsedExampleDataSet;
}
// ===========================================================
// Methods
// ===========================================================
@Override
public void startDocument() throws SAXException {
this.myParsedExampleDataSet = new ParserXMLObject();
}
@Override
public void endDocument() throws SAXException {
// Nothing to do
}
/** Gets be called on opening tags like:
* <tag>
* Can provide attribute(s), when xml was like:
public void startElement(String namespaceURI, String localName,
String qName, Attributes atts) throws SAXException {
if (localName.equals("outertag")) {
this.in_outertag = true;
}else if (localName.equals("innertag")) {
this.in_innertag = true;
}else if (localName.equals("mytag")) {
this.in_mytag = true;
}else if (localName.equals("tagwithnumber")) {
// Extract an Attribute
String attrValue = atts.getValue("thenumber");
int i = Integer.parseInt(attrValue);
myParsedExampleDataSet.setExtractedInt(i);
}
}
/** Gets be called on closing tags like:
* </tag> */
@Override
public void endElement(String namespaceURI, String localName, String qName)
throws SAXException {
if (localName.equals("outertag")) {
this.in_outertag = false;
}else if (localName.equals("innertag")) {
this.in_innertag = false;
}else if (localName.equals("mytag")) {
this.in_mytag = false;
}else if (localName.equals("tagwithnumber")) {
// Nothing to do here
}
}
/** Gets be called on the following structure:
* <tag>characters</tag> */
@Override
public void characters(char ch[], int start, int length) {
if(this.in_mytag){
myParsedExampleDataSet.setExtractedString(new String(ch, start, length));
}
}
}
这是LOGCAT：
04-11 12:40:48.773: I/Adreno200-EGLSUB(25887): <ConfigWindowMatch:2078>: Format RGBA_8888.
04-11 12:40:48.783: D/memalloc(25887): /dev/pmem: Mapped buffer base:0x4b966000 size:1536000 offset:0 fd:53
04-11 12:40:48.893: D/memalloc(25887): /dev/pmem: Mapped buffer base:0x4bde7000 size:9154560 offset:7618560 fd:56
04-11 12:40:51.553: D/memalloc(25887): /dev/pmem: Mapped buffer base:0x4c81c000 size:7557120 offset:6021120 fd:59
04-11 12:40:51.593: W/dalvikvm(25887): threadid=1: thread exiting with uncaught exception (group=0x40c5d1f8)
04-11 12:40:51.603: E/AndroidRuntime(25887): FATAL EXCEPTION: main
04-11 12:40:51.603: E/AndroidRuntime(25887): java.lang.IllegalStateException: Could not find a method Kliknuto(View) in the activity class cz.jiri.podlipny.weather_design.MainActivity for onClick handler on view class android.widget.Button with id 'button1'
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.view.View$1.onClick(View.java:3039)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.view.View.performClick(View.java:3519)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.view.View$PerformClick.run(View.java:14140)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.os.Handler.handleCallback(Handler.java:605)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.os.Handler.dispatchMessage(Handler.java:92)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.os.Looper.loop(Looper.java:137)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.app.ActivityThread.main(ActivityThread.java:4424)
04-11 12:40:51.603: E/AndroidRuntime(25887): at java.lang.reflect.Method.invokeNative(Native Method)
04-11 12:40:51.603: E/AndroidRuntime(25887): at java.lang.reflect.Method.invoke(Method.java:511)
04-11 12:40:51.603: E/AndroidRuntime(25887): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
04-11 12:40:51.603: E/AndroidRuntime(25887): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
04-11 12:40:51.603: E/AndroidRuntime(25887): at dalvik.system.NativeStart.main(Native Method)
04-11 12:40:51.603: E/AndroidRuntime(25887): Caused by: java.lang.NoSuchMethodException: Kliknuto [class android.view.View]
04-11 12:40:51.603: E/AndroidRuntime(25887): at java.lang.Class.getConstructorOrMethod(Class.java:460)
04-11 12:40:51.603: E/AndroidRuntime(25887): at java.lang.Class.getMethod(Class.java:915)
04-11 12:40:51.603: E/AndroidRuntime(25887): at android.view.View$1.onClick(View.java:3032)
04-11 12:40:51.603: E/AndroidRuntime(25887): ... 11 more
04-11 12:42:34.123: I/Adreno200-EGLSUB(25988): <ConfigWindowMatch:2078>: Format RGBA_8888.
04-11 12:42:34.163: D/memalloc(25988): /dev/pmem: Mapped buffer base:0x4bac1000 size:9154560 offset:7618560 fd:53
04-11 12:42:34.283: D/memalloc(25988): /dev/pmem: Mapped buffer base:0x4c4bc000 size:1536000 offset:0 fd:56
04-11 12:42:35.333: D/memalloc(25988): /dev/pmem: Mapped buffer base:0x4c79e000 size:7557120 offset:6021120 fd:59
04-11 12:42:35.353: W/dalvikvm(25988): threadid=1: thread exiting with uncaught exception (group=0x40c5d1f8)
04-11 12:42:35.363: E/AndroidRuntime(25988): FATAL EXCEPTION: main
04-11 12:42:35.363: E/AndroidRuntime(25988): java.lang.IllegalStateException: Could not find a method Kliknuto(View) in the activity class cz.jiri.podlipny.weather_design.MainActivity for onClick handler on view class android.widget.Button with id 'button1'
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.view.View$1.onClick(View.java:3039)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.view.View.performClick(View.java:3519)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.view.View$PerformClick.run(View.java:14140)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.os.Handler.handleCallback(Handler.java:605)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.os.Handler.dispatchMessage(Handler.java:92)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.os.Looper.loop(Looper.java:137)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.app.ActivityThread.main(ActivityThread.java:4424)
04-11 12:42:35.363: E/AndroidRuntime(25988): at java.lang.reflect.Method.invokeNative(Native Method)
04-11 12:42:35.363: E/AndroidRuntime(25988): at java.lang.reflect.Method.invoke(Method.java:511)
04-11 12:42:35.363: E/AndroidRuntime(25988): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
04-11 12:42:35.363: E/AndroidRuntime(25988): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
04-11 12:42:35.363: E/AndroidRuntime(25988): at dalvik.system.NativeStart.main(Native Method)
04-11 12:42:35.363: E/AndroidRuntime(25988): Caused by: java.lang.NoSuchMethodException: Kliknuto [class android.view.View]
04-11 12:42:35.363: E/AndroidRuntime(25988): at java.lang.Class.getConstructorOrMethod(Class.java:460)
04-11 12:42:35.363: E/AndroidRuntime(25988): at java.lang.Class.getMethod(Class.java:915)
04-11 12:42:35.363: E/AndroidRuntime(25988): at android.view.View$1.onClick(View.java:3032)
04-11 12:42:35.363: E/AndroidRuntime(25988): ... 11 more
04-11 13:14:30.589: I/Adreno200-EGLSUB(26277): <ConfigWindowMatch:2078>: Format RGBA_8888.
04-11 13:14:30.609: D/memalloc(26277): /dev/pmem: Mapped buffer base:0x4ba23000 size:1536000 offset:0 fd:53
04-11 13:14:30.719: D/memalloc(26277): /dev/pmem: Mapped buffer base:0x4be17000 size:7557120 offset:6021120 fd:56
04-11 13:14:32.039: D/memalloc(26277): /dev/pmem: Mapped buffer base:0x4c680000 size:9154560 offset:7618560 fd:59
04-11 13:14:32.069: W/dalvikvm(26277): threadid=1: thread exiting with uncaught exception (group=0x40c5d1f8)
04-11 13:14:32.079: E/AndroidRuntime(26277): FATAL EXCEPTION: main
04-11 13:14:32.079: E/AndroidRuntime(26277): java.lang.IllegalStateException: Could not find a method Kliknuto(View) in the activity class cz.jiri.podlipny.weather_design.MainActivity for onClick handler on view class android.widget.Button with id 'button1'
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.view.View$1.onClick(View.java:3039)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.view.View.performClick(View.java:3519)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.view.View$PerformClick.run(View.java:14140)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.os.Handler.handleCallback(Handler.java:605)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.os.Handler.dispatchMessage(Handler.java:92)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.os.Looper.loop(Looper.java:137)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.app.ActivityThread.main(ActivityThread.java:4424)
04-11 13:14:32.079: E/AndroidRuntime(26277): at java.lang.reflect.Method.invokeNative(Native Method)
04-11 13:14:32.079: E/AndroidRuntime(26277): at java.lang.reflect.Method.invoke(Method.java:511)
04-11 13:14:32.079: E/AndroidRuntime(26277): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
04-11 13:14:32.079: E/AndroidRuntime(26277): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
04-11 13:14:32.079: E/AndroidRuntime(26277): at dalvik.system.NativeStart.main(Native Method)
04-11 13:14:32.079: E/AndroidRuntime(26277): Caused by: java.lang.NoSuchMethodException: Kliknuto [class android.view.View]
04-11 13:14:32.079: E/AndroidRuntime(26277): at java.lang.Class.getConstructorOrMethod(Class.java:460)
04-11 13:14:32.079: E/AndroidRuntime(26277): at java.lang.Class.getMethod(Class.java:915)
04-11 13:14:32.079: E/AndroidRuntime(26277): at android.view.View$1.onClick(View.java:3032)
04-11 13:14:32.079: E/AndroidRuntime(26277): ... 11 more
答案 0 :(得分：0)
在布局xml文件中，您有一个ID为button1的按钮。 onClick属性引用了一个名为Kliknuto()的方法，但您已实现了一个名为kliknuto()的方法（注意区别）。
尝试将Kliknuto替换为kliknuto属性中的onClick。