用于listView的自定义ArrayAdapter，其中图像不足
[英]custom ArrayAdapter for listView with images out of memory
问题描述
I'm trying to show data from an xml file , I maid a class that parses the information into a list and I need to show the pictures and the tostring of each item therefor I created a custom ArrayAdapter. 
我试图显示来自xml文件的数据，我给一个将信息解析为列表的类，需要显示图片和每个项目的字符串，为此创建了一个自定义ArrayAdapter。 for some reason this error keeps popping up when I use the activity 由于某些原因，当我使用该活动时，此错误会不断弹出
05-31 17:14:13.338 24755-24755/com.yuvaleliav1gmail.foodchain E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.yuvaleliav1gmail.foodchain, PID: 24755
java.lang.OutOfMemoryError: Failed to allocate a 63489036 byte allocation with 16777216 free bytes and 20MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
at android.graphics.BitmapFactory.decodeStreamInternal(BitmapFactory.java:882)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:858)
at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:478)
at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:516)
at android.graphics.drawable.Drawable.createFromPath(Drawable.java:2577)
at com.yuvaleliav1gmail.foodchain.CustomListViewAdapter.getView(CustomListViewAdapter.java:52)
at android.widget.AbsListView.obtainView(AbsListView.java:2929)
at android.widget.ListView.makeAndAddView(ListView.java:1945)
at android.widget.ListView.fillUp(ListView.java:755)
at android.widget.ListView.correctTooHigh(ListView.java:1456)
at android.widget.ListView.fillGap(ListView.java:684)
at android.widget.AbsListView.trackMotionScroll(AbsListView.java:7293)
at android.widget.AbsListView.scrollIfNeeded(AbsListView.java:4391)
at android.widget.AbsListView.onTouchMove(AbsListView.java:5782)
at android.widget.AbsListView.onTouchEvent(AbsListView.java:5610)
at android.view.View.dispatchTouchEvent(View.java:9993)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2828)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2499)
at android.widget.AbsListView.dispatchTouchEvent(AbsListView.java:5547)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2839)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2514)
at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2831)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1863)
at android.app.Activity.dispatchTouchEvent(Activity.java:3046)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2792)
at android.view.View.dispatchPointerEvent(View.java:10228)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5344)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5180)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4620)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4673)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4639)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4781)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4647)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4838)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4620)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4673)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4639)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4647)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4620)
at android.view.ViewRootImpl.deliverI
this is the code: 这是代码：
import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;
/**
* Created by rippe on 5/31/2016.
*/
public class CustomListViewAdapter extends ArrayAdapter<Meal> {
Context context;
public CustomListViewAdapter(Context context, int resourceId, //resourceId=your layout
List<Meal> items) {
super(context, resourceId, items);
this.context = context;
}
/*private view holder class*/
private class ViewHolder {
ImageView imageView;
TextView txtTitle;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
Meal rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
holder = new ViewHolder();
holder.txtTitle = (TextView) convertView.findViewById(R.id.title555);
holder.imageView = (ImageView) convertView.findViewById(R.id.icon555);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
holder.txtTitle.setText(rowItem.toString());
if(rowItem.getPicPath().compareTo("") != 0)
holder.imageView.setImageDrawable(Drawable.createFromPath(rowItem.getPicPath()));
return convertView;
}
}
this is the activity: 这是活动：
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
public class XmlPullParser extends AppCompatActivity {
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_xml_pull_parser);
listView = (ListView) findViewById(R.id.list);
List<Meal> meals = null;
try {
XMLPullParserHandler parser = new XMLPullParserHandler();
meals = parser.parse(getStringFromFile(Globals.xmlFilePath));
CustomListViewAdapter adapter =
new CustomListViewAdapter(this,R.layout.list_item, meals);
listView.setAdapter(adapter);
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public static FileInputStream getStringFromFile (String filePath) throws Exception {
File fl = new File(filePath);
FileInputStream fin = new FileInputStream(fl);
return fin;
}
}
this is the parser: although i don't thin the problem is in the parser but in the custom ArrayAdapter... 这是解析器：虽然我不瘦，但问题出在解析器中，但是在自定义ArrayAdapter中...
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
class XMLPullParserHandler {
List<Meal> meals;
private Meal meal;
private String text;
public XMLPullParserHandler() {
meals = new ArrayList<Meal>();
}
public List<Meal> getMeals() {
return meals;
}
public List<Meal> parse(InputStream is) {
XmlPullParserFactory factory = null;
XmlPullParser parser = null;
try {
factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
parser = factory.newPullParser();
parser.setInput(is, null);
int eventType = parser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
String tagname = parser.getName();
switch (eventType) {
case XmlPullParser.START_TAG:
if (tagname.equalsIgnoreCase("Meal") || tagname.equalsIgnoreCase("Comment") || tagname.equalsIgnoreCase("Weight")) {
meal = new Meal();
meal.setTimestamp(parser.getAttributeValue(0));
}
break;
case XmlPullParser.TEXT:
text = parser.getText();
break;
case XmlPullParser.END_TAG:
if (tagname.equalsIgnoreCase("Meal") || tagname.equalsIgnoreCase("Comment") || tagname.equalsIgnoreCase("Weight")) {
// add employee object to list
meals.add(meal);
} else if (tagname.equalsIgnoreCase("Score")) {
meal.setScore(text);
} else if (tagname.equalsIgnoreCase("Description")) {
meal.setDescription(text);
} else if (tagname.equalsIgnoreCase("Note")) {
meal.setNotes(text);
} else if (tagname.equalsIgnoreCase("Picture")) {
meal.setPicPath(text);
} else if (tagname.equalsIgnoreCase("WeightNumber")) {
meal.setWeightNumber(text);
} else if (tagname.equalsIgnoreCase("CommentType")) {
meal.setCommentType(text);
}
break;
default:
break;
}
eventType = parser.next();
}
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return meals;
}
}
1 个解决方案
解决方案1
2 已采纳 2016-05-31 15:05:04
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