Android默认优先使用WPS打开PDF文档

爱被打了一巴掌 2022-04-16 07:14 540阅读 0赞

使用第三方App打开PDF文档，当选择使用WPS时，出现提示获取文档类型，一直打不开的情况。

解决办法，首先检测是否安装了WPS软件。如果安装了，则用WPS打开，否则，使用默认工具打开。

具体实现如下：

1、工具类SystemUtil

public class SystemUtil {
    
        public static boolean isInstall(Context context, String packageName) {
            final PackageManager packageManager = context.getPackageManager();
            // 获取所有已安装程序的包信息
            List<PackageInfo> pinfo = packageManager.getInstalledPackages(0);
            for (int i = 0; i < pinfo.size(); i++) {
                if (pinfo.get(i).packageName.equalsIgnoreCase(packageName))
                    return true;
            }
            return false;
        }
    
    }

2、下载文档类

public class DownloadUtils {
    
        private static ProgressDialog mDialog = null;
    
        /**
         * 显示下载进度条
         *
         * @param aty
         */
        public static void showProgressDialog(Activity aty) {
            if (mDialog == null) {
                mDialog = new ProgressDialog(aty);
                mDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//设置风格为圆形进度条
                mDialog.setMessage(aty.getResources().getString(R.string.msg_downloading));
                mDialog.setIndeterminate(false);//设置进度条是否为不明确
                mDialog.setCancelable(true);//设置进度条是否可以按退回键取消
                mDialog.setCanceledOnTouchOutside(false);
                mDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
                    @Override
                    public void onDismiss(DialogInterface dialog) {
                        mDialog = null;
                    }
                });
                mDialog.show();
            }
        }
    
        /**
         * 关闭下载进度条
         */
        public static void closeProgressDialog() {
            if (mDialog != null) {
                mDialog.dismiss();
                mDialog = null;
            }
        }
    
        /**
         * 获取打开文档意图
         *
         * @param file
         * @return
         */
        public static Intent getFileIntent(Activity activity, File file) {
            Uri uri = Uri.fromFile(file);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                //通过FileProvider创建一个content类型的Uri
                uri = FileProvider.getUriForFile(activity, "com.invt.fileprovider", file);
            }
            String type = getMIMEType(file);
            //优先使用WPS打开
            //检测是否安装了wps软件，没有安装选择默认打开
            Intent intent = new Intent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setAction(android.content.Intent.ACTION_VIEW);
            if (SystemUtil.isInstall(activity, "cn.wps.moffice_eng")) {
                intent.setClassName("cn.wps.moffice_eng",
                        "cn.wps.moffice.documentmanager.PreStartActivity2");
                intent.setData(uri);
            } else {
                intent.addCategory("android.intent.category.DEFAULT");
                intent.setDataAndType(uri, type);
            }
            return intent;
        }
    
        /**
         * 下载文件到sdcard
         *
         * @param fileName
         * @param input
         */
        public static void writeToSDCard(String fileName, InputStream input) {
            // 判断是否挂载了SD卡
            String storageState = Environment.getExternalStorageState();
            if (storageState.equals(Environment.MEDIA_MOUNTED)) {
                String directory = getDownloadPath();
                File dir = new File(directory);
                if (!dir.exists()) {
                    dir.mkdirs();
                }
                File file = new File(directory, fileName);
                if (file.exists()) {
                    file.delete();
                }
                try {
                    FileOutputStream fos = new FileOutputStream(file);
                    byte[] b = new byte[2048];
                    int j = 0;
                    while ((j = input.read(b)) != -1) {
                        fos.write(b, 0, j);
                    }
                    fos.flush();
                    fos.close();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    
        /**
         * 获取下载路径
         *
         * @return
         */
        public static String getDownloadPath() {
            String compName = AppString.getCompanyName();
            return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + compName + "/Doc/";
        }
    
        /**
         * 获取文档类型，并打开
         *
         * @param f
         * @return
         */
        private static String getMIMEType(File f) {
            String type = "";
            String fName = f.getName();
            /* 取得扩展名 */
            String end = fName.substring(fName.lastIndexOf(".") + 1, fName.length()).toLowerCase();
            /* 依扩展名的类型决定MimeType */
            if (end.equals("pdf")) {
                type = "application/pdf";
            } else if (end.equals("m4a") || end.equals("mp3") || end.equals("mid") ||
                    end.equals("xmf") || end.equals("ogg") || end.equals("wav")) {
                type = "audio/*";
            } else if (end.equals("3gp") || end.equals("mp4")) {
                type = "video/*";
            } else if (end.equals("jpg") || end.equals("gif") || end.equals("png") ||
                    end.equals("jpeg") || end.equals("bmp")) {
                type = "image/*";
            } else if (end.equals("apk")) {
                type = "application/vnd.android.package-archive";
            } else if (end.equals("pptx") || end.equals("ppt")) {
                type = "application/vnd.ms-powerpoint";
            } else if (end.equals("docx") || end.equals("doc")) {
                type = "application/vnd.ms-word";
            } else if (end.equals("xlsx") || end.equals("xls")) {
                type = "application/vnd.ms-excel";
            } else {
                //如果无法直接打开，就跳出软件列表给用户选择
                type = "*/*";
            }
            return type;
        }
    
    }

3、使用

DownloaderTask task = new DownloaderTask();
            task.execute(mDownloadUrl);

/**
         * 任务类
         */
        private class DownloaderTask extends AsyncTask<String, Void, String> {
    
            @Override
            protected String doInBackground(String... params) {
                String url = params[0];
                String fileName = url.substring(url.lastIndexOf("/") + 1);
                try {
                    fileName = URLDecoder.decode(fileName, "UTF-8");
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
                MyLogger.i("download", "fileName=" + fileName);
                try {
                    URL resUrl = new URL(url);
                    HttpURLConnection conn = (HttpURLConnection) resUrl.openConnection();
                    conn.connect();
                    InputStream input = conn.getInputStream();
                    DownloadUtils.writeToSDCard(fileName, input);
                    input.close();
                    return fileName;
                } catch (Exception e) {
                    e.printStackTrace();
                    return null;
                }
            }
    
            @Override
            protected void onCancelled() {
                super.onCancelled();
            }
    
            @Override
            protected void onPostExecute(String result) {
                super.onPostExecute(result);
                DownloadUtils.closeProgressDialog();
                if (result == null) {
                    ToastUtils.showShortToast(StartActivity.this, R.string.msg_downloaderror);
                    return;
                }
                ToastUtils.showShortToast(StartActivity.this, R.string.msg_downloadsuccess);
                String dir = DownloadUtils.getDownloadPath();
                File file = new File(dir, result);
                Intent intent = DownloadUtils.getFileIntent(StartActivity.this, file);
                //自动打开
                startActivity(intent);
            }
    
            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                DownloadUtils.showProgressDialog(StartActivity.this);
            }
    
            @Override
            protected void onProgressUpdate(Void... values) {
                super.onProgressUpdate(values);
            }
    
        }

核心代码：

/**
         * 获取打开文档意图
         *
         * @param file
         * @return
         */
        public static Intent getFileIntent(Activity activity, File file) {
            Uri uri = Uri.fromFile(file);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                //通过FileProvider创建一个content类型的Uri
                uri = FileProvider.getUriForFile(activity, "com.invt.fileprovider", file);
            }
            String type = getMIMEType(file);
            //优先使用WPS打开
            //检测是否安装了wps软件，没有安装选择默认打开
            Intent intent = new Intent();
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setAction(android.content.Intent.ACTION_VIEW);
            if (SystemUtil.isInstall(activity, "cn.wps.moffice_eng")) {
                intent.setClassName("cn.wps.moffice_eng",
                        "cn.wps.moffice.documentmanager.PreStartActivity2");
                intent.setData(uri);
            } else {
                intent.addCategory("android.intent.category.DEFAULT");
                intent.setDataAndType(uri, type);
            }
            return intent;
        }

完！！！