阅读从SD卡的PDF文件 [英] Read pdf file from sd card

问题描述

我想读取存储在我的sd卡的PDF文件，我试图用这个片段

 档案文件=新的文件（Environment.getExternalStorageDirectory（）
            +/ vvveksperten+/ypc.pdf）;

    PackageManager packageManager = getPackageManager（）;
    意图testIntent =新的意图（Intent.ACTION_VIEW）;
    testIntent.setType（应用程序/ PDF格式）;
    列表列表= packageManager.queryIntentActivities（testIntent，
            PackageManager.MATCH_DEFAULT_ONLY）;
    意向意图=新的意图（）;
    intent.setAction（Intent.ACTION_VIEW）;
    开放的我们的uri = Uri.fromFile（文件）;
    intent.setDataAndType（URI，应用程序/ PDF格式）;
    startActivity（意向）;
 

但它给了我一个错误。

  ERROR / AndroidRuntime（2611）：android.content.ActivityNotFoundException：无活动处理意向{行为= android.intent.action.VIEW DAT =文件：/// MNT / SD卡/ vvveksperten / ypc.pdf典型值=应用程序/ PDF}
 

解决方案

请检查您的设备可在任何PDF阅读器应用程序，我想没有任何..

只要使用这个code，

 私人无效viewPdf（URI文件）{
        意向意图;
        意图=新的意图（Intent.ACTION_VIEW）;
        intent.setDataAndType（文件，应用程序/ PDF格式）;
        尝试 {
            startActivity（意向）;
        }赶上（ActivityNotFoundException E）{
            //没有应用程序来查看，请下载一个
            AlertDialog.Builder建设者=新AlertDialog.Builder（本）;
            builder.setTitle（无应用程序找到）;
            builder.setMessage（从Android Market下载一个？）;
            builder.setPositiveButton（是的，请，
                    新DialogInterface.OnClickListener（）{
                        @覆盖
                        公共无效的onClick（DialogInterface对话，诠释它）{
                            意图marketIntent =新的意图（Intent.ACTION_VIEW）;
                            marketIntent
                                    .setData（URI
                                            .parse（市场：//细节ID = com.adobe.reader））;
                            startActivity（marketIntent）;
                        }
                    }）;
            builder.setNegativeButton（不，谢谢，NULL）;
            builder.create（）显示（）。
        }
    }
 

如果任何不可用PDF阅读器应用程序，然后这个code是从Android Market下载PDF文档阅读器，但可以肯定你的设备有pre安装 Android的市场应用程序。所以我觉得这个尝试在Android设备上，而不是模拟器。

I want to read a pdf file stored in my sd card, I tried using this snippet

    File file = new File(Environment.getExternalStorageDirectory()
            + "/vvveksperten" + "/ypc.pdf");

    PackageManager packageManager = getPackageManager();
    Intent testIntent = new Intent(Intent.ACTION_VIEW);
    testIntent.setType("application/pdf");
    List list = packageManager.queryIntentActivities(testIntent,
            PackageManager.MATCH_DEFAULT_ONLY);
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_VIEW);
    Uri uri = Uri.fromFile(file);
    intent.setDataAndType(uri, "application/pdf");
    startActivity(intent);

but it gave me an error.

ERROR/AndroidRuntime(2611): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=file:///mnt/sdcard/vvveksperten/ypc.pdf typ=application/pdf }

解决方案

Please check your device is any pdf reader application available, I think isn't any..

Just use this code,

private void viewPdf(Uri file) {
        Intent intent;
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(file, "application/pdf");
        try {
            startActivity(intent);
        } catch (ActivityNotFoundException e) {
            // No application to view, ask to download one
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("No Application Found");
            builder.setMessage("Download one from Android Market?");
            builder.setPositiveButton("Yes, Please",
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Intent marketIntent = new Intent(Intent.ACTION_VIEW);
                            marketIntent
                                    .setData(Uri
                                            .parse("market://details?id=com.adobe.reader"));
                            startActivity(marketIntent);
                        }
                    });
            builder.setNegativeButton("No, Thanks", null);
            builder.create().show();
        }
    }

If any pdf reader application not available then this code is download pdf reader from android market, But be sure your device has pre-installed android-market application. So I think try this on android device, rather then emulator.

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