Fix UI bugs. reviewed by redding.

@@ -249,6 +249,7 @@ export default class SubjectPost extends Component {
                                 autoCapitalize={'none'}
                                 autoCorrect={false}
                                 autoFocus={true}
+                                maxLength={1000}
                                 onChangeText={
                                     (text)=>{
                                         this.replyContent = text;
@@ -259,6 +260,11 @@ export default class SubjectPost extends Component {
                                         }
                                     }
                                 }
+                                onKeyPress={(event)=>{
+                                    if (this.replyContent >= 1000) {
+                                        NativeModules.YH_CommunityHelper.showText('超出1000字符最长限制');
+                                    }
+                                }}
                             />
                             <Text style={[styles.submitText, {color:this.state.replyTextColor}]} onPress={this.commitComment}>发送</Text>
                         </View>
@@ -288,6 +294,7 @@ export default class SubjectPost extends Component {
                                 autoCapitalize={'none'}
                                 autoCorrect={false}
                                 autoFocus={true}
+                                maxLength={1000}
                                 onChangeText={
                                     (text)=>{
                                         this.replyContent = text;
@@ -298,6 +305,11 @@ export default class SubjectPost extends Component {
                                         }
                                     }
                                 }
+                                onKeyPress={(event)=>{
+                                    if (this.replyContent >= 1000) {
+                                        NativeModules.YH_CommunityHelper.showText('超出1000字符最长限制');
+                                    }
+                                }}
                             />
                             <Text style={[styles.submitText, {color:this.state.replyTextColor}]} onPress={this.commitComment}>发送</Text>
                         </View>
@@ -313,7 +325,7 @@ export default class SubjectPost extends Component {
     }
 
     commitComment() {
-        if (this.replyContent.length == 0) {
+        if (this.replyContent.length == 0 && !this.props.assets.length) {
             Alert.alert('抱歉','请先输入内容');
             return;
         }
@@ -356,6 +368,7 @@ export default class SubjectPost extends Component {
             replyTo,
         }
         this.props.commentWithParams(params, fakeComment);
+        this.replyContent = '';
         this.blurAll();
     }
     renderRow(rowData, sectionId) {

@@ -104,7 +104,7 @@ class SubjectPostContainer extends Component {
 
     onEndReached() {
         let item = this.props.subject.items.get(this.sid);
-        if (item.currentPage>=item.totalPages) {
+        if (item.commentReachEnd) {
             return;
         }
         this.props.actions.requestPostComments(this.sid, item.id, item.lastedTime);

@@ -422,6 +422,7 @@ export function assetsSelected(sid,assets) {
 
 export function commentWithParams(sid,params, newList) {
     return (dispatch, getState) => {
+        NativeModules.YH_CommunityAssetsPicker.resetState();
         dispatch(startComment(sid));
         let {subject} = getState();
         let item = subject.items.get(sid);