统一暂停，继续下载处理

app/src/main/java/com/gh/download/DownloadManager.java

@@ -2,6 +2,9 @@ package com.gh.download;
 
 import android.content.Context;
 import android.content.Intent;
+import android.os.Handler;
+import android.os.Message;
+import android.support.v4.util.ArrayMap;
 import android.widget.Toast;
 
 import com.gh.common.constant.Constants;
@@ -16,16 +19,43 @@ public class DownloadManager {
 	private static DownloadManager mInstance;
 	private Context context;
 
+	private Handler handler;
+	private ArrayMap<String, Long> lastTimeMap;
+
 	private DownloadManager(Context context) {
 		this.context = context;
+		lastTimeMap = new ArrayMap<String, Long>();
+		handler = new Handler(context.getMainLooper()){
+			@Override
+			public void handleMessage(Message msg) {
+				if (msg.what == Constants.CONTINUE_DOWNLOAD_TASK) {
+					String url = (String) msg.obj;
+					if (System.currentTimeMillis() - lastTimeMap.get(url) >= 1000) {
+						resume(url);
+					}
+				} else if (msg.what == Constants.PAUSE_DOWNLOAD_TASK) {
+					String url = (String) msg.obj;
+					if (System.currentTimeMillis() - lastTimeMap.get(url) >= 1000) {
+						pause(url);
+					}
+				}
+			}
+		};
 		context.startService(new Intent(context, DownloadService.class));
 	}
 
+	public void put(String url, long time) {
+		lastTimeMap.put(url, time);
+	}
+
+	public void sendMessageDelayed(Message msg, long delayMillis) {
+		handler.sendMessageDelayed(msg, delayMillis);
+	}
+
 	public static DownloadManager getInstance(Context context) {
 		if (mInstance == null) {
 			mInstance = new DownloadManager(context.getApplicationContext());
 		}
-
 		return mInstance;
 	}