监听Google Player下载并获取包名等信息

一、解决思路

通过监听ContentObserver监听下载路径content://downloads

二、具体步骤

1 设置监听器

    context.getContentResolver()
        .registerContentObserver(Uri.parse("content://downloads"), true, new ContentObserver() {
            @Override
            public void onChange(boolean selfChange, Uri uri) {
                super.onChange(selfChange, uri);
                parseData(uri);
            }
        });

2 数据解析

• Uri过滤

    private void parseData(Uri uri) {
        List<String> segments = uri.getPathSegments();
        if (segments != null && segments.size() > 1) {
            String segment = (String) segments.get(1);
            synchronized (this.pathSegments) {
                if (this.pathSegments.contains(segment)) {
                    return;
                }
                this.pathSegments.add(segment);
            }

            obtainAppInfo(segment);
        }
    }

• 应用信息获取：

    private void obtainAppInfo(String segment){
        ...
        cursor = queryDownloadPkg(segment);
        if (cursor == null || cursor.getColumnCount() < 15) {
            return;
        }

        cursor.moveToNext();
        String marketName = cursor.getString(9); // 应用市场包名
        String appLink = cursor.getString(15); // 下载应用的包名链接
        String appName = cursor.getString(20); //获取应用名称
        ...
    }

    private Cursor queryDownloadPkg(String segment) {
        return this.context.getContentResolver()
                .query(Uri.parse("content://downloads/public_downloads/" + segment),
                        (String[]) null, (String) null, (String[]) null, (String) null);
    }