1 package com.bumptech.glide.request; 2 3 /** 4 * A request that loads a resource for an {@link com.bumptech.glide.request.target.Target}. 5 */ 6 public interface Request { 7 8 /** 9 * Starts an asynchronous load. 10 */ begin()11 void begin(); 12 13 /** 14 * Identical to {@link #clear()} except that the request may later be restarted. 15 */ pause()16 void pause(); 17 18 /** 19 * Prevents any bitmaps being loaded from previous requests, releases any resources held by this request, 20 * displays the current placeholder if one was provided, and marks the request as having been cancelled. 21 */ clear()22 void clear(); 23 24 /** 25 * Returns true if this request is paused and may be restarted. 26 */ isPaused()27 boolean isPaused(); 28 29 /** 30 * Returns true if this request is running and has not completed or failed. 31 */ isRunning()32 boolean isRunning(); 33 34 /** 35 * Returns true if the request has completed successfully. 36 */ isComplete()37 boolean isComplete(); 38 39 /** 40 * Returns true if a non-placeholder resource is set. For Requests that load more than one resource, isResourceSet 41 * may return true even if {@link #isComplete()}} returns false. 42 */ isResourceSet()43 boolean isResourceSet(); 44 45 /** 46 * Returns true if the request has been cancelled. 47 */ isCancelled()48 boolean isCancelled(); 49 50 /** 51 * Returns true if the request has failed. 52 */ isFailed()53 boolean isFailed(); 54 55 /** 56 * Recycles the request object and releases its resources. 57 */ recycle()58 void recycle(); 59 } 60