Make your app appear in the list of "open with other apps"

1. Your APP icon appears in the "Open with" list. Create a new independent activity

 <!--外部应用发送文件-->
        <activity
            android:name=".chat.mine.SendExternalFileActivity"
            android:screenOrientation="locked">
            <!--使用三方应用打开-->
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="file" />
                <data android:scheme="content" />
                <data android:scheme="http" />
                <data android:scheme="https" />
                <data android:mimeType="*/*" />
            </intent-filter>
            <!--分享暂不用，需要处理链接数据 -->
<!--            <intent-filter>-->
<!--                <action android:name="android.intent.action.SEND" />-->
<!--                <category android:name="android.intent.category.DEFAULT" />-->
<!--                <data android:mimeType="*/*" />-->
<!--            </intent-filter>-->
        </activity>

2. Obtain the path in onCreate() (temporarily only for sending files)

   /***
     * 获取文件路径
     * @param savedInstanceState
     */
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Uri uri = getIntent().getData();
        fileUri = uri;
        String str = Uri.decode(uri.getEncodedPath());
        if (str != null) {
            String[] strings = str.split("/");
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < strings.length - 1; i++) {
                sb.append(strings[i] + "/");
            }
            mFilePath = sb.toString();
            mFileName = strings[strings.length - 1];
        }
        if (!LoginUtils.getInstance().isLogin(getContext())) {
            ToastUtils.showToast("请先登录后再次操作");
            IntentUtils.getInstance().toActivity(getContext(), LoginActivity.class);
            SendExternalFileActivity.this.finish();
        }
    }

3. Send files (using Tencent's IM to send messages)

        messageListAdapter.setOnPositionClick(new OnPositionClick() {
            @Override
            public void onPositionClick(int position) {
                /**点击事件*/
                if (fileUri != null) {
                    MessageInfo fileMessage = MessageInfoUtil.buildFileMessage(fileUri);
                    ConversationInfo info = conversationData.get(position);
                    TIMConversation mConversation = TIMManager.getInstance().getConversation(info.isGroup() ? TIMConversationType.Group : TIMConversationType.C2C, info.getId());
                    if (mConversation !=null) {
                        DialogUtils.getInstance().chooseCheckMan(SendExternalFileActivity.this, "温馨提示", "发送到" + info.getTitle() + "\n" + mFileName, new ChooseCheckMan() {
                            @Override
                            public void onCheck() {
                                mConversation.sendMessage(fileMessage.getTIMMessage(), new TIMValueCallBack<TIMMessage>() {
                                    @Override
                                    public void onError(int i, String s) {
                                        ToastUtils.showToast("发送失败");
                                    }

                                    @Override
                                    public void onSuccess(TIMMessage timMessage) {
                                        ToastUtils.showToast("发送成功");
                                        SendExternalFileActivity.this.finish();
                                        /**进入此会话中*/
//                                        ChatHelper.getInstance().startChatActivity(getContext(), conversationList.get(position));
                                    }
                                });
                            }
                        });
                    }
                }
            }
        });