m3u8增加了ignoreFailureTs方法，忽略虾类失败的ts切片

修复在dialogFragment的`onCreateDialog()`注册导致的注解不生效问题

Aria/src/main/java/com/arialyy/aria/core/WidgetLiftManager.java

@@ -73,8 +73,16 @@ final class WidgetLiftManager {
 
   /**
    * 处理对话框取消或dismiss
+   *
+   * @return true 设置了dialog的销毁事件。false 没有设置dialog的销毁事件
    */
   boolean handleDialogLift(Dialog dialog) {
+    if (dialog == null) {
+      ALog.w(TAG,
+          "dialog 为空，没有设置自动销毁事件，为了防止内存泄露，请在dismiss方法中调用Aria.download(this).unRegister();来注销事件\n"
+              + "如果你使用的是DialogFragment，那么你需要在onDestroy()中进行销毁Aria事件操作");
+      return false;
+    }
     try {
       Field dismissField = CommonUtil.getField(dialog.getClass(), "mDismissMessage");
       Message dismissMsg = (Message) dismissField.get(dialog);

Aria/src/main/java/com/arialyy/aria/core/common/ProxyHelper.java

@@ -75,50 +75,23 @@ public class ProxyHelper {
       return result;
     }
     result = new HashSet<>();
-    try {
-      if (getClass().getClassLoader()
-          .loadClass(className.concat(TaskEnum.DOWNLOAD_GROUP.proxySuffix))
-          != null) {
-        result.add(PROXY_TYPE_DOWNLOAD_GROUP);
-      }
-    } catch (ClassNotFoundException e) {
-      //e.printStackTrace();
+    if (checkProxyExist(className, TaskEnum.DOWNLOAD_GROUP.proxySuffix)) {
+      result.add(PROXY_TYPE_DOWNLOAD_GROUP);
     }
-    try {
-      if (getClass().getClassLoader().loadClass(className.concat(TaskEnum.DOWNLOAD.proxySuffix))
-          != null) {
-        result.add(PROXY_TYPE_DOWNLOAD);
-      }
-    } catch (ClassNotFoundException e) {
-      //e.printStackTrace();
+    if (checkProxyExist(className, TaskEnum.DOWNLOAD.proxySuffix)) {
+      result.add(PROXY_TYPE_DOWNLOAD);
     }
 
-    try {
-      if (getClass().getClassLoader().loadClass(className.concat(TaskEnum.UPLOAD.proxySuffix))
-          != null) {
-        result.add(PROXY_TYPE_UPLOAD);
-      }
-    } catch (ClassNotFoundException e) {
-      //e.printStackTrace();
+    if (checkProxyExist(className, TaskEnum.UPLOAD.proxySuffix)) {
+      result.add(PROXY_TYPE_UPLOAD);
     }
 
-    try {
-      if (getClass().getClassLoader().loadClass(className.concat(TaskEnum.M3U8_PEER.proxySuffix))
-          != null) {
-        result.add(PROXY_TYPE_M3U8_PEER);
-      }
-    } catch (ClassNotFoundException e) {
-      //e.printStackTrace();
+    if (checkProxyExist(className, TaskEnum.M3U8_PEER.proxySuffix)) {
+      result.add(PROXY_TYPE_M3U8_PEER);
     }
 
-    try {
-      if (getClass().getClassLoader()
-          .loadClass(className.concat(TaskEnum.DOWNLOAD_GROUP_SUB.proxySuffix))
-          != null) {
-        result.add(PROXY_TYPE_DOWNLOAD_GROUP_SUB);
-      }
-    } catch (ClassNotFoundException e) {
-      //e.printStackTrace();
+    if (checkProxyExist(className, TaskEnum.DOWNLOAD_GROUP_SUB.proxySuffix)) {
+      result.add(PROXY_TYPE_DOWNLOAD_GROUP_SUB);
     }
 
     if (!result.isEmpty()) {
@@ -126,4 +99,20 @@ public class ProxyHelper {
     }
     return result;
   }
+
+  private boolean checkProxyExist(String className, String proxySuffix) {
+    String clsName = className.concat(proxySuffix);
+
+    try {
+      if (getClass().getClassLoader().loadClass(clsName) != null) {
+        return true;
+      }
+      if (Class.forName(clsName) != null) {
+        return true;
+      }
+    } catch (ClassNotFoundException e) {
+      //e.printStackTrace();
+    }
+    return false;
+  }
 }

Aria/src/main/java/com/arialyy/aria/core/download/m3u8/M3U8Option.java

@@ -33,12 +33,21 @@ public class M3U8Option<OP extends M3U8Option> extends BaseOption {
   private ITsMergeHandler mergeHandler;
   private IBandWidthUrlConverter bandWidthUrlConverter;
   private IKeyUrlConverter keyUrlConverter;
+  private boolean ignoreFailureTs = false;
 
   M3U8Option() {
     super();
     ComponentUtil.getInstance().checkComponentExist(ComponentUtil.COMPONENT_TYPE_M3U8);
   }
 
+  /**
+   * 忽略下载失败的ts切片，即使有失败的切片，下载完成后也要合并所有切片，并进入complete回调
+   */
+  public OP ignoreFailureTs() {
+    this.ignoreFailureTs = true;
+    return (OP) this;
+  }
+
   /**
    * 生成m3u8索引文件
    * 注意：创建索引文件，{@link #merge(boolean)}方法设置与否都不再合并文件