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POsave images in cache android
 

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    <p>My android project layout xml file has three button. which are shows, events &amp; home. when buttons click they download images from url &amp; save them in cache. So now downloaded are completed once it is clicked. when click the shows button again it must show the downloaded images taking from cache. </p> <p>The problem is I download all the images in one cache dir. when button click separately they load default images. because can't identify images. my code as following way.</p> <pre><code>public FileCache(Context context){ //Find the dir to save cached images if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)){ cacheDir=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/shows"); cacheDirEvent=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/events"); cacheDirPromotion=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/promotion"); } else{ cacheDir=context.getCacheDir(); cacheDirEvent=context.getCacheDir(); cacheDirPromotion=context.getCacheDir(); } if(!cacheDir.exists()&amp;&amp; !cacheDirEvent.exists() &amp;&amp; !cacheDirPromotion.exists()){ cacheDir.mkdirs(); cacheDirEvent.mkdir(); cacheDirPromotion.mkdir(); } } public File getFile(String url){ //I identify images by hashcode. Not a perfect solution, good for the demo. String filename=String.valueOf(url.hashCode()); //Another possible solution (thanks to grantland) //String filename = URLEncoder.encode(url); File f = new File(cacheDir, filename); return f; } </code></pre> <p>pls help me. i'm stuck with this question</p> <p>After that I have done this. but same answer.......why is it?</p> <pre><code>public FileCache(Context context,int i){ //Find the dir to save cached images if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)&amp;&amp; i==3) cacheDir=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/shows"); else if(android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)&amp;&amp; i==2) cacheDirEvent=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/events"); else if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED) &amp;&amp; i==1) cacheDirHome=new File(android.os.Environment.getExternalStorageDirectory(),"TNLRadio/res/home"); else cacheDir=context.getCacheDir(); cacheDirEvent=context.getCacheDir(); cacheDirHome=context.getCacheDir(); if(!cacheDir.exists()) cacheDir.mkdirs(); else if (!cacheDirHome.exists()) cacheDirHome.mkdirs(); else if (!cacheDirEvent.exists()) cacheDirEvent.mkdirs(); } public File getFile(String url){ //I identify images by hashcode. Not a perfect solution, good for the demo. String filename=String.valueOf(url.hashCode()); //Another possible solution (thanks to grantland) //String filename = URLEncoder.encode(url); if(url.substring(0, 26).equals("http://tnlradio/promotions")){ File f = new File(cacheDirHome, filename); return f;} else if(url.equals("http://stream.tnlradio.com/images/dilshan-ishara.jpg")){ File f = new File(cacheDirEvent, filename); return f;} else{ File f = new File(cacheDir, filename); return f; } } </code></pre> <p>pls help me</p>
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