Android 打开office文档

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Android 打开office文档

应用中需要打开office文档，word,excel,pdf等。

方案一：用系统自带的office工具打开，预览

        Intent intent = new Intent("android.intent.action.VIEW");intent.addCategory("android.intent.category.DEFAULT");intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);Uri uri;if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {uri = FileProvider.getUriForFile(this, FILE_PROVIDER, file);intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);} else {uri = Uri.fromFile(file);}switch (prefix) {case Constant.UploadFileType.XLS:intent.setDataAndType(uri, "application/vnd.ms-excel");break;case Constant.UploadFileType.XLSX:intent.setDataAndType(uri, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");break;case Constant.UploadFileType.DOC:intent.setDataAndType(uri, "application/msword");break;case Constant.UploadFileType.DOCX:intent.setDataAndType(uri, "application/vnd.openxmlformats-officedocument.wordprocessingml.document");break;case Constant.UploadFileType.PDF:intent.setDataAndType(uri, "application/pdf");break;}//toast remindstartActivity(intent);finishActivity();