mirror of https://github.com/tasks/tasks
Caching images in AsyncImageView
Andrew Shaw
14 years ago
parent
599e7b7561
commit
2a01d8460d
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<?xml version="1.0" encoding="utf-8"?>
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<!-- See the file "LICENSE" for the full license governing this code. -->
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:astrid="http://schemas.android.com/apk/res/com.timsu.astrid"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:minHeight="57dip"
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android:paddingTop="2dip"
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android:paddingBottom="2dip"
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android:gravity="center_vertical"
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android:orientation="horizontal">
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<View
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android:id="@+id/importance_legacy"
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android:layout_width="4dip"
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android:layout_height="fill_parent"
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android:visibility="gone" />
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<!-- indent -->
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<View android:id="@+id/indent"
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android:layout_width="0dip"
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android:layout_height="fill_parent"/>
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<!-- grabber -->
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<ImageView android:id="@+id/grabber"
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android:layout_width="wrap_content"
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android:layout_height="fill_parent"
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android:scaleType="center"
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android:src="@drawable/grabber"/>
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<RelativeLayout android:id="@+id/rowBody"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:background="@android:drawable/list_selector_background"
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android:layout_marginTop="6dip"
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android:layout_marginBottom="6dip"
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android:paddingLeft="5dip">
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<com.todoroo.astrid.ui.CheckableImageView
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android:id="@+id/completeBox"
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android:layout_width="45dip"
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android:layout_height="wrap_content"
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android:minHeight="30dip"
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android:scaleType="center"
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android:layout_alignParentTop="true"
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android:layout_marginLeft="2dip"
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android:button="@drawable/btn_check" />
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<!-- assignee photo -->
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<com.todoroo.astrid.helper.AsyncImageView
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android:id="@+id/picture"
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android:layout_width="35dip"
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android:layout_height="35dip"
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android:layout_marginLeft="10dip"
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astrid:defaultSrc="@drawable/icn_default_person_image"
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android:scaleType="fitCenter"
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android:visibility="gone" />
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<LinearLayout
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android:id="@+id/task_row"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_toRightOf="@id/completeBox"
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android:layout_centerVertical="true"
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android:orientation="horizontal"
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android:gravity="center_vertical"
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android:paddingLeft="5dip" >
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<!-- task name -->
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<TextView
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android:id="@+id/title"
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style="@style/TextAppearance.TAd_ItemTitle"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_weight="100"
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android:gravity="center_vertical"
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android:maxLines="2" />
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<!-- due date -->
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<LinearLayout
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android:id="@+id/taskActionContainer"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:minHeight="40dip"
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android:layout_marginRight="4dip"
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android:orientation="vertical"
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android:gravity="right|center_vertical">
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<TextView
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android:id="@+id/dueDate"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignParentRight="true"
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android:layout_marginRight="4dip"
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android:gravity="center_vertical|right" />
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<ImageView
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android:id="@+id/taskActionIcon"
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android:layout_width="20dip"
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android:layout_height="20dip"
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android:scaleType="fitCenter"
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android:visibility="gone"/>
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</LinearLayout>
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</LinearLayout>
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<!-- details line 1 -->
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<TextView android:id="@+id/details1"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_below="@id/task_row"
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android:layout_alignParentLeft="true"
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android:layout_marginTop="-1dip"
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style="@style/TextAppearance.TAd_ItemDetails"
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android:visibility="gone" />
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<!-- details line 2 -->
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<TextView android:id="@+id/details2"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_below="@id/details1"
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android:layout_alignParentLeft="true"
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style="@style/TextAppearance.TAd_ItemDetails"
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android:visibility="gone" />
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</RelativeLayout>
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</LinearLayout>
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@ -0,0 +1,67 @@
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package com.todoroo.astrid.helper;
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import java.io.IOException;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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/*
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* Subclass of greendroid.widget.AsyncImageView, so that we can cache the image locally when user is offline
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* IMPORTANT: cannot load a cached image by setting the url in an xml file. --ImageDiskCache object is created after object is loaded from xml
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*/
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public class AsyncImageView extends greendroid.widget.AsyncImageView {
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private final ImageDiskCache imageDiskCache;
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private Bitmap cacheImage;
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private String cacheURL = ""; //$NON-NLS-1$
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public AsyncImageView(Context context) {
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super(context);
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imageDiskCache = ImageDiskCache.getInstance();
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}
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public AsyncImageView(Context context, AttributeSet set) {
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super(context, set);
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imageDiskCache = ImageDiskCache.getInstance();
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}
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public AsyncImageView(Context context, AttributeSet set, int defStyle) {
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super(context, set, defStyle);
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imageDiskCache = ImageDiskCache.getInstance();
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}
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@Override
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public void setUrl(String url) {
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if (cacheImage != null && cacheURL.equals(url) && !TextUtils.isEmpty(url)) {
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setImageBitmap(cacheImage);
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return;
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}
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else if(imageDiskCache != null && imageDiskCache.contains(url)) {
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try {
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cacheImage = imageDiskCache.get(url);
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setImageBitmap(cacheImage);
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cacheURL = url;
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return;
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} catch (IOException e) {
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//
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}
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}
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super.setUrl(url);
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}
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public Bitmap getImageBitmap() {
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setDrawingCacheEnabled(true);
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// this is the important code :)
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// Without it the view will have a dimension of 0,0 and the bitmap will be null
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measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
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MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
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layout(0, 0, getMeasuredWidth(), getMeasuredHeight());
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buildDrawingCache(true);
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Bitmap b = Bitmap.createBitmap(getDrawingCache());
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setDrawingCacheEnabled(false); // clear drawing cache
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return b;
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}
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}
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