本文介绍了我该如何解决InputEventReceiver错误？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在android的创建了一个小程序来同步从云中的数据，但每当我preSS的刷新按钮（用于开发目的）的code不响应..在logcat中显示：
02-25 22：57：32.195：W / InputEventReceiver（17762）： 试图完成输入事件，但该输入事件接收器具有已 被释放。
在Java code为MainActivity和FragmentActivity类下面给出
包sunshine.com.example.himanshu.sunshine;
进口android.os.Bundle;
进口android.support.v4.app.Fragment;
进口android.support.v7.app.ActionBarActivity;
进口android.view.Menu;
进口android.view.MenuItem;
公共类MainActivity扩展ActionBarActivity {
@覆盖
保护无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_main）;
如果（savedInstanceState == NULL）{
。getSupportFragmentManager（）的BeginTransaction（）加（R.id.container，新ForecastFragment（））提交（）。 }
}
@覆盖
公共布尔onCreateOptionsMenu（功能菜单）{
//充气菜单;这增加了项目操作栏，如果它是present。
。getMenuInflater（）膨胀（R.menu.menu_main，菜单）;
返回true;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
//处理动作栏项目点击这里。将操作栏
//自动在主/向上按钮操作的点击，只要
//你在AndroidManifest.xml中指定一个父活动。
INT的id = item.getItemId（）;
如果（ID == R.id.action_settings）{
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
}
包sunshine.com.example.himanshu.sunshine;
进口android.annotation.TargetApi;
进口android.net.Uri;
进口android.os.AsyncTask;
进口android.os.Bundle;
进口android.support.v4.app.Fragment;
进口android.util.Log;
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuInflater;
进口android.view.MenuItem;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.ArrayAdapter;
进口android.widget.ListView;
进口org.json.JSONArray;
进口org.json.JSONException;
进口org.json.JSONObject;
进口java.io.BufferedReader中;
进口java.io.IOException异常;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口java.net.HttpURLConnection中;
进口的java.net.URL;
进口java.text.SimpleDateFormat的;
进口的java.util.ArrayList;
进口java.util.Arrays中;
进口java.util.Date;
进口的java.util.List;
/ **
*在2015年2月25日创建于人士Himanshu。
* /
公共类ForecastFragment扩展片段
{
公共ForecastFragment（）{
}
@覆盖
公共无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
setHasOptionsMenu（真正的）;
}
@覆盖
公共无效onCreateOptionsMenu（功能菜单，MenuInflater充气）{
inflater.inflate（R.menu.forecast_fragment，菜单）;
}
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
INT的id = item.getItemId（）;
如果（ID == R.id.refresh_action）
{
FetchWeatherTask取=新FetchWeatherTask（）;
fetch.execute（716217）;
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
@覆盖
公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
捆绑savedInstanceState）{
查看rootView = inflater.inflate（R.layout.fragment_main，集装箱，假）;
字符串forecastArray [] =
{今天，阳光明媚-23/34，
明天，雾，67分之45
周三，小行星三十四分之五十四
周四 - 阳光明媚-34/56，
周五，雾，三十四分之四十五
周六日-四十五分之二十三
太阳阳光-34/65，
有一天，阴沉-九十分之七十八
周六日-45分之23
周三，小行星三十四分之五十四
今天，阳光明媚-23/34号};
名单＆LT;字符串＆GT; weekForecast =新的ArrayList＆LT;字符串＆GT;（Arrays.asList（forecastArray））;
ArrayAdapter＆LT;字符串＆GT; mForecastAdapter =新的ArrayAdapter＆LT;字符串＆GT;（getActivity（），R.layout.list_item_forecast，R.id.list_item_forecast_textview，weekForecast）;
ListView控件的ListView =（ListView控件）rootView.findViewById（R.id.listview_forecast）;
listView.setAdapter（mForecastAdapter）;
返回rootView;
}
公共类FetchWeatherTask扩展的AsyncTask＆LT;字符串，太虚，太虚＆GT; {
私人最终字符串LOG_TAG = FetchWeatherTask.class.getSimpleName（）;
@覆盖
保护无效doInBackground（字符串... PARAMS）
{
如果（params.length == 0）
返回null;
//这两个需要在try / catch语句外声明
//使他们可以在关闭finally块。
HttpURLConnection类的URLConnection = NULL;
BufferedReader中读= NULL;
//将包含原始JSON响应为字符串。
字符串forecastJsonStr = NULL;
尝试 {
//构造的URL OpenWeatherMap查询
//可能的参数是缴费在OWM的预测API页面，在
// http://openweathermap.org/API#forecast
字符串格式=JSON;
字符串单位=指标;
INT天= 7;
最后弦乐SURL =http://api.openweathermap.org/data/2.5/forecast/daily？;
最后串P code =Q;
最终的字符串模式=模式;
最后弦乐单位=单位;
最后弦乐daysy =CNT;
乌里urlbulilt = Uri.parse（SURL）.buildUpon（）。appendQueryParameter（P code，则params [0]）
.appendQueryParameter（模式，格式）
.appendQueryParameter（台，个）
.appendQueryParameter（daysy，Integer.toString（天））建立（）。
网址URL =新的URL（urlbulilt.toString（））;
//创建请求OpenWeatherMap，并打开连接
的URLConnection =（HttpURLConnection类）url.openConnection（）;
urlConnection.setRequestMethod（GET）;
urlConnection.connect（）;
//读取输入流转换为字符串
InputStream中的InputStream = urlConnection.getInputStream（）;
StringBuffer的缓冲区=新的StringBuffer（）;
如果（的InputStream == NULL）{
// 没事做。
返回null;
}
读者=新的BufferedReader（新的InputStreamReader（InputStream中））;
串线;
而（（行= reader.readLine（））！= NULL）{
//因为它是JSON，增加一个新行是没有必要的（不会影响解析）
//但它确实使调试*很多*容易，如果你打印出完成
//缓冲区进行调试。
buffer.append（行+\ N）;
}
如果（buffer.length（）== 0）{
//流是空的。没有点解析。
返回null;
}
forecastJsonStr = buffer.toString（）;
}赶上（IOException异常E）{
Log.e（LOG_TAG，错误，E）;
//如果code没有顺利拿到天气数据，还有在attemping没有意义
//解析它。
返回null;
} 最后 {
如果（URLConnection的！= NULL）{
urlConnection.disconnect（）;
}
如果（读者！= NULL）{
尝试 {
reader.close（）;
}赶上（最终IOException异常E）{
Log.e（LOG_TAG，错误收盘流，E）;
}
}
}
返回null;
}
}
}
解决方案
我想这是因为你的提取对象是一个局部变量的onOptionsItemSelected（）方法，通过AsyncTask的完成它已经被垃圾回收的时间。
尝试使其成为一个字段，然后在onOptionsItemSelected分配给它（）方法
公共类ForecastFragment扩展片段{
私人FetchWeatherTask获取;
公共ForecastFragment（）{
}
...
然后
@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
INT的id = item.getItemId（）;
如果（ID == R.id.refresh_action）
{
取=新FetchWeatherTask（）;
fetch.execute（716217）;
返回true;
}
返回super.onOptionsItemSelected（项目）;
}
现在你取的对象应该还是围绕AsyncTask的完成时。
I have created a small program in android to sync the data from the cloud but whenever I press the refresh button (for developing purposes) the code does not responds..The Logcat shows:
02-25 22:57:32.195: W/InputEventReceiver(17762): Attempted to finish an input event but the input event receiver has already been disposed.
The java code for the MainActivity and the FragmentActivity classes are given below
package sunshine.com.example.himanshu.sunshine;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.container, new ForecastFragment()).commit(); }
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
package sunshine.com.example.himanshu.sunshine;
import android.annotation.TargetApi;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
/**
* Created by Himanshu on 2/25/2015.
*/
public class ForecastFragment extends Fragment
{
public ForecastFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.forecast_fragment,menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id=item.getItemId();
if(id==R.id.refresh_action)
{
FetchWeatherTask fetch=new FetchWeatherTask();
fetch.execute("716217");
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
String forecastArray[] =
{ "Today-sunny-23/34",
"Tomorrow-foggy-45/67",
"Wed-asteroid-54/34",
"Thursday--sunny-34/56",
"Fri-foggy-45/34"
, "Sat-day-23/45"
, "Sun-Sunny-34/65",
"Someday-gloomy-78/90",
"Sat-day-23/45",
"Wed-asteroid-54/34",
"Today-sunny-23/34" };
List<String> weekForecast = new ArrayList<String>(Arrays.asList(forecastArray));
ArrayAdapter<String> mForecastAdapter = new ArrayAdapter<String>(getActivity(), R.layout.list_item_forecast, R.id.list_item_forecast_textview, weekForecast);
ListView listView = (ListView) rootView.findViewById(R.id.listview_forecast);
listView.setAdapter(mForecastAdapter);
return rootView;
}
public class FetchWeatherTask extends AsyncTask<String, Void, Void> {
private final String LOG_TAG = FetchWeatherTask.class.getSimpleName();
@Override
protected Void doInBackground(String... params)
{
if(params.length==0)
return null;
// These two need to be declared outside the try/catch
// so that they can be closed in the finally block.
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
// Will contain the raw JSON response as a string.
String forecastJsonStr = null;
try {
// Construct the URL for the OpenWeatherMap query
// Possible parameters are avaiable at OWM's forecast API page, at
// http://openweathermap.org/API#forecast
String format="json";
String unit="metric";
int days=7;
final String surl="http://api.openweathermap.org/data/2.5/forecast/daily?";
final String pcode="q";
final String mode="mode";
final String units="units";
final String daysy="cnt";
Uri urlbulilt=Uri.parse(surl).buildUpon().appendQueryParameter(pcode,params[0])
.appendQueryParameter(mode,format)
.appendQueryParameter(units,unit)
.appendQueryParameter(daysy,Integer.toString(days)).build();
URL url=new URL(urlbulilt.toString());
// Create the request to OpenWeatherMap, and open the connection
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
// Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
// But it does make debugging a *lot* easier if you print out the completed
// buffer for debugging.
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
forecastJsonStr = buffer.toString();
} catch (IOException e) {
Log.e(LOG_TAG, "Error ", e);
// If the code didn't successfully get the weather data, there's no point in attemping
// to parse it.
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(LOG_TAG, "Error closing stream", e);
}
}
}
return null;
}
}
}
解决方案
I think this is because your fetch object is a local variable to the onOptionsItemSelected() method, by the time the AsyncTask completes it has already been garbage collected.
Try making it a field and then assigning it in the onOptionsItemSelected() method
public class ForecastFragment extends Fragment {
private FetchWeatherTask fetch;
public ForecastFragment() {
}
...
and then
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id=item.getItemId();
if(id==R.id.refresh_action)
{
fetch=new FetchWeatherTask();
fetch.execute("716217");
return true;
}
return super.onOptionsItemSelected(item);
}
now your fetch object should still be around when the AsyncTask completes.
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