学步园

	System.out.println("getCacheDir: "+WebViewActivity.this.getCacheDir());
    	System.out.println("PackageResourcePath(): "+WebViewActivity.this.getPackageCodePath());
    	System.out.println("getCacheDir: "+WebViewActivity.this.getPackageResourcePath());
    	System.out.println("FilesDir: "+WebViewActivity.this.getDatabasePath("webview.db").getPath());
    	System.out.println("FilesDir: "+WebViewActivity.this.getFilesDir().getPath())

03-31 11:54:52.094: I/System.out(22224): getCacheDir: /data/data/com.liao.webview/cache
03-31 11:54:52.094: I/System.out(22224): PackageResourcePath(): /data/app/com.liao.webview-1.apk
03-31 11:54:52.115: I/System.out(22224): getCacheDir: /data/app/com.liao.webview-1.apk
03-31 11:54:52.115: I/System.out(22224): FilesDir: /data/data/com.liao.webview/databases/webview.db
03-31 11:54:52.154: I/System.out(22224): FilesDir: /data/data/com.liao.webview/files
03-31 11:54:52.265: I/ActivityManager(59): Displayed activity com.liao.webview/.WebViewActivity: 418 ms (total 418 ms)

// clear the cache before time numDays     
private int clearCacheFolder(File dir, long numDays) {          
    int deletedFiles = 0;         
    if (dir!= null && dir.isDirectory()) {             
        try {                
            for (File child:dir.listFiles()) {    
                if (child.isDirectory()) {              
                    deletedFiles += clearCacheFolder(child, numDays);          
                }    
                if (child.lastModified() < numDays) {     
                    if (child.delete()) {                   
                        deletedFiles++;           
                    }    
                }    
            }             
        } catch(Exception e) {       
            e.printStackTrace();    
        }     
    }       
    return deletedFiles;     
}   

//优先使用缓存：
WebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);  

//不使用缓存：
WebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE); 

退出的时候加上下面代码

File file = CacheManager.getCacheFileBaseDir();  
   if (file != null && file.exists() && file.isDirectory()) {  
    for (File item : file.listFiles()) {  
     item.delete();  
    }  
    file.delete();  
   }  
  
  context.deleteDatabase("webview.db");  
  context.deleteDatabase("webviewCache.db");