ListView中LinearLayout上的事件
[英]Event on LinearLayout in ListView
问题描述
我尝试获取在LinearLayout数据，而LinearLayout本身在ListView 。 因此，按照我的逻辑，我将一个id放在LinearLayout ，然后添加一个OnToucheListener 。 但是，当我运行该应用程序时，该应用程序意外退出。
我想在LinearLayout获取TexTview ，以允许在AlertDialog中更改数据。
我在AsyncTask onPostExecute()中使用SimpleAdapter实现了ListView ，所以到目前为止，所有工作都onPostExecute() ，但是我不知道如何获取我的listView的linearLayout的element（textview）。
因此，这是我的代码，尝试使用AlertDialog获取linearLayout以允许更改数据。
LayoutInflater factory = LayoutInflater.from(this);
final View alertDialogView = factory.inflate(R.layout.alert_dialog_divers, null);
LinearLayout linear = (LinearLayout) findViewById(R.id.test);
linear.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
AlertDialog.Builder adb = new AlertDialog.Builder(listview.this);
adb.setView(alertDialogView);
adb.setTitle("Divers");
adb.setIcon(android.R.drawable.ic_dialog_alert);
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
EditText et = (EditText)alertDialogView.findViewById(R.id.EditText1);
}
});
adb.setNegativeButton("Annuler", null);
//on affiche la boite de dialogue
adb.show();
}
});
这是我的listView xml文件。 （我用红色宠爱，以更好地了解我的linearLayout在哪里）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="230dp"
android:layout_weight="0.56"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="70dp"
android:background="@drawable/border"
android:orientation="horizontal" >
<TextView
android:id="@+id/collector_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:text="> B10954-1"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:id="@+id/adress"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_weight="0"
android:text="AIDER BOURGOGNE 14 Rue de la Breuchillière 21000 DIJON "
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginLeft="80dp"
android:layout_marginTop="5dp"
android:text="@string/depose"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="@+id/product_code"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:padding="5dp"
android:text="3 F50D - 2 C50HD - 3 F50D - 2 C50HD - 4 BA300 - 5CE2 - 4F30E"
android:textSize="15sp" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="@drawable/border"
android:baselineAligned="false"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.75"
android:background="@drawable/border"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/border" >
<TextView
android:id="@+id/begin_hour"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:paddingLeft="5dp"
android:text="07:30-12:30 "
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/end_hour"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="5dp"
android:text="14:00-19:00"
android:textSize="20sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="@string/ordre"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="@+id/order"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="2"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="@string/tpsarret"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="@+id/downtime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="2 min"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Below, the linearLyout in question with id : test ---------------------------------
<LinearLayout
android:id="@+id/test"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.5"
android:background="@drawable/linear_option"
android:clickable="true"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/border"
android:weightSum="2" >
<TextView
android:id="@+id/fax"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="5dp"
android:text="03 80 91 03 03 "
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/tel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text=" 06 43 66 53 16"
android:textSize="20sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/crayon_icon" />
<TextView
android:id="@+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="@string/divers"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="25sp"
android:textStyle="bold" />
</LinearLayout>
<TextView
android:id="@+id/miscellaneous"
android:layout_width="333dp"
android:layout_height="fill_parent"
android:layout_marginLeft="5dp"
android:paddingLeft="40dp"
android:textSize="20sp" />
</LinearLayout>
End of the linearLayout in question ----------------------------------------------------
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1.5"
android:background="@drawable/linear_option"
android:clickable="true"
android:orientation="vertical" >
<TextView
android:id="@+id/textView6"
android:layout_width="fill_parent"
android:layout_height="28dp"
android:background="@drawable/border" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/crayon_icon" />
<TextView
android:id="@+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text="@string/infosco"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="25sp"
android:textStyle="bold" />
</LinearLayout>
<TextView
android:id="@+id/infos"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="5dp"
android:paddingLeft="40dp"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="118dp"
android:layout_height="230dp"
android:background="@drawable/border"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants">
<FrameLayout
android:layout_width="66dp"
android:layout_height="73dp"
android:layout_gravity="center"
android:layout_marginTop="50dp"
android:background="@drawable/editer_doc" >
</FrameLayout>
</LinearLayout>
如您所见，有很多LinearLayout父级。 所以当我用id = test触摸布局时，我想用id：杂项获取textView并允许对其进行更改。
希望您能理解。
编辑1：
02-12 08:45:54.370: E/AndroidRuntime(9076): FATAL EXCEPTION: main
02-12 08:45:54.370: E/AndroidRuntime(9076): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.main/com.main.listview}: java.lang.NullPointerException
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread.access$600(ActivityThread.java:123)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.os.Handler.dispatchMessage(Handler.java:99)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.os.Looper.loop(Looper.java:137)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread.main(ActivityThread.java:4424)
02-12 08:45:54.370: E/AndroidRuntime(9076): at java.lang.reflect.Method.invokeNative(Native Method)
02-12 08:45:54.370: E/AndroidRuntime(9076): at java.lang.reflect.Method.invoke(Method.java:511)
02-12 08:45:54.370: E/AndroidRuntime(9076): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-12 08:45:54.370: E/AndroidRuntime(9076): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-12 08:45:54.370: E/AndroidRuntime(9076): at dalvik.system.NativeStart.main(Native Method)
02-12 08:45:54.370: E/AndroidRuntime(9076): Caused by: java.lang.NullPointerException
02-12 08:45:54.370: E/AndroidRuntime(9076): at com.main.listview.onCreate(listview.java:68)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.Activity.performCreate(Activity.java:4465)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
02-12 08:45:54.370: E/AndroidRuntime(9076): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
编辑2：
public class listview extends Activity {
private ListView maListViewPerso;
ImageButton imgButton;
Boolean isConnected;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ActionBar actionBar = getActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color
.parseColor("#000000")));
maListViewPerso = (ListView) findViewById(R.id.listviewperso);
isConnected = isOnline();
getData(isConnected);
//On instancie notre layout en tant que View
LayoutInflater factory = LayoutInflater.from(this);
final View alertDialogView = factory.inflate(R.layout.alert_dialog_divers, null);
LinearLayout linear = (LinearLayout) findViewById(R.id.test);
linear.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
AlertDialog.Builder adb = new AlertDialog.Builder(listview.this);
adb.setView(alertDialogView);
adb.setTitle("Divers");
adb.setIcon(android.R.drawable.ic_dialog_alert);
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
EditText et = (EditText)alertDialogView.findViewById(R.id.EditText1);
}
});
adb.setNegativeButton("Annuler", null);
//on affiche la boite de dialogue
adb.show();
}
});
我的listeView加载whend getData（）被调用。 （此函数调用Asynctask并填充Hashmap，后者使用SimpleAdapter填充listView）
编辑3：
package com.main;
import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
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.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.AssetManager;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashMap;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.pdf.GetViewPDF;
public class listview extends Activity {
private ListView maListViewPerso;
ImageButton imgButton;
Boolean isConnected;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ActionBar actionBar = getActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color
.parseColor("#000000")));
maListViewPerso = (ListView) findViewById(R.id.listviewperso);
isConnected = isOnline();
getData(isConnected);
setdivers();
}
public void setdivers(){
//On instancie notre layout en tant que View
LayoutInflater factory = LayoutInflater.from(this);
final View alertDialogView = factory.inflate(R.layout.alert_dialog_divers, null);
LinearLayout layout = (LinearLayout) findViewById(R.id.test);
layout.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
AlertDialog.Builder adb = new AlertDialog.Builder(listview.this);
adb.setView(alertDialogView);
adb.setTitle("Divers");
adb.setIcon(android.R.drawable.ic_dialog_alert);
adb.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
EditText et = (EditText)alertDialogView.findViewById(R.id.EditText1);
}
});
adb.setNegativeButton("Annuler", null);
//on affiche la boite de dialogue
adb.show();
}
});
}
public boolean isOnline() {
ConnectivityManager cm =
(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
return true;
}
return false;
}
@Override
public void onBackPressed() {
Toast.makeText(this,"Action Désactivée", Toast.LENGTH_LONG).show();
// getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
// getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}
public void GoToPDF(){
Intent intent = new Intent(this, GetViewPDF.class);
startActivity(intent);
}
public void getData(Boolean isConnected){
if(isConnected){
asyncTask asynchrone_task_tournee = new asyncTask(listview.this, maListViewPerso);
asynchrone_task_tournee.execute();
}else{
//J'initialise toutes les variables
JSONArray jArray = null;
JSONObject json_data=null;
HashMap<String, String> map;
ArrayList<HashMap<String, String>> listItem = new ArrayList<HashMap<String, String>>();
InputStream is = null;
Writer writer = new StringWriter();
char[] buffer = new char[1024];
//je récupère le fichier .txt de donner JSON dans le repertoir asset
AssetManager am = listview.this.getAssets();
try {
is = am.open("donnees_tourne.txt");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
//Je lis le fichier .txt
try {
Reader reader = null;
int n;
try {
reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
while ((n = reader.read(buffer)) != -1)
{
writer.write(buffer, 0, n);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
//recuperation des donnees json dans jsonString
String jsonString = writer.toString();
Log.i("JSON_NOT_connected",jsonString);
//traitement du json dans le tableau json JSONArray
try {
jArray = new JSONArray(jsonString);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Insertion des données json dans un Hashmap
for(int i=0;i < jArray.length();i++)
{
try {
json_data = jArray.getJSONObject(i);
map = new HashMap<String, String>();
map.put("collector_id", json_data.getString("collector_id"));
map.put("adress", json_data.getString("adress"));
map.put("product_code", json_data.getString("product_code"));
map.put("begin_hour", json_data.getString("begin_hour"));
map.put("end_hour", json_data.getString("end_hour"));
map.put("order", json_data.getString("order"));
map.put("downtime", json_data.getString("downtime"));
map.put("fax", json_data.getString("fax"));
map.put("tel", json_data.getString("tel"));
map.put("miscellaneous", json_data.getString("miscellaneous"));
map.put("infos", json_data.getString("infos"));
listItem.add(map);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
SimpleAdapter mSchedule = new SimpleAdapter (listview.this, listItem, R.layout.list_type_tournee,
//noms donnés en clé dans le Hashmap
new String[] {"collector_id", "adress","product_code","begin_hour",
"end_hour","order","downtime","fax",
"tel","miscellaneous","infos"},
//variables textview dans la list_type_tournee.xml
new int[] {R.id.collector_id, R.id.adress,R.id.product_code,R.id.begin_hour,
R.id.end_hour,R.id.order,R.id.downtime,R.id.fax,
R.id.tel,R.id.miscellaneous,R.id.infos});
maListViewPerso.setAdapter(mSchedule);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.point_menu, menu);
menu.getItem(0).setTitle(UtilClass.stringNow());
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_now:
return true;
case R.id.menu_login:
Intent activiteU = new Intent(listview.this, LoginActivity.class);
startActivity(activiteU);
return true;
case R.id.menu_tour_inf:
Intent activiteT = new Intent(listview.this, TourActivity.class);
activiteT.putExtra("userid", 10);
startActivity(activiteT);
return true;
case R.id.menu_point_list:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
1 个解决方案
解决方案1
0 2014-02-12 09:24:00
我是否正确理解此行上的NullPointerException？
LinearLayout linear = (LinearLayout) findViewById(R.id.test);
看起来好像在没有发布布局的东西上隐式调用了findViewById，或者在布局被加载之前被调用。 您是否还可以发布其余的代码？
LinearLayout内ListView中的NullPointerException
[英]NullPointerException in ListView inside a LinearLayout
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