19、Android打开附件

其他 2018-08-13 14:08:29 阅读次数: 0

1.在清单文件中添加provider内容

<application
    android:name=".AppApplication"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="demo.exmple.com.emidemo.utils.FileProvider7"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_paths" />
    </provider>

</application>

2.在resource中新建xml文件夹，在xml文件夹中新建以下内容

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <paths xmlns:android="http://schemas.android.com/apk/res/android">

        <root-path
            name="root"
            path="" />
        <files-path
            name="files"
            path="" />

        <cache-path
            name="cache"
            path="" />

        <external-path
            name="external"
            path="" />

        <external-files-path
            name="external_file_path"
            path="" />
        <external-cache-path
            name="external_cache_path"
            path="" />
    </paths>
</resources>

这里写图片描述

3.工具类 
3.1 工具类1

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;

import java.io.File;

/**
 * Created by Test on 2018/8/3.
 */

public class FileProvider7 {

    public static Uri getUriForFile(Context context, File file) {
        Uri fileUri = null;
        if (Build.VERSION.SDK_INT >= 24) {
            fileUri = getUriForFile24(context, file);
        } else {
            fileUri = Uri.fromFile(file);
        }
        return fileUri;
    }

    public static Uri getUriForFile24(Context context, File file) {
        Uri fileUri = android.support.v4.content.FileProvider.getUriForFile(context,
                context.getPackageName() + ".utils.FileProvider7",
                file);
        return fileUri;
    }


    public static void setIntentDataAndType(Context context,
                                            Intent intent,
                                            String type,
                                            File file,
                                            boolean writeAble) {
        if (Build.VERSION.SDK_INT >= 24) {
            intent.setDataAndType(getUriForFile(context, file), type);
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            if (writeAble) {
                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            }
        } else {
            intent.setDataAndType(Uri.fromFile(file), type);
        }
    }
}

3.2 工具类2

import android.content.Intent;
import android.net.Uri;
import android.os.Build;

import java.io.File;

/**
 * Created by Test on 2018/8/3.
 */

public class AndroidFileUtil {
    public static Intent openFile(String filePath, Uri fileUri) {

        System.out.println("打开的文件路径 : " + filePath);
        File file = new File(filePath);
        if (!file.exists()) {
            return null;
        }
        /* 取得扩展名 */
        String fileName = file.getName();
        String end = fileName.substring(file.getName().lastIndexOf(".") + 1,
                file.getName().length()).toLowerCase();
        /* 依扩展名的类型决定MimeType */
        Intent intent = null;
        if (end.equals("jpg") || end.equals("gif") || end.equals("png")
                || end.equals("jpeg") || end.equals("bmp")) {
            intent = getImageFileIntent(filePath, fileUri);
        } else if (end.equals("ppt")) {
            intent = getPptFileIntent(filePath, fileUri);
        } else if (end.equals("xls") || end.equals("xlsx")||end.equals("xml")) {
//          intent = getExcelFileIntent(filePath);
            intent = getExcelFileIntent(filePath, fileUri);
        } else if (end.equals("doc")) {
            intent = getWordFileIntent(filePath, fileUri);
        } else if (end.equals("docx")) {
            intent = getWordFileIntent(filePath, fileUri);
        } else if (end.equals("pdf")) {
            intent = getPdfFileIntent(filePath, fileUri);
        } else if (end.equals("chm")) {
            intent = getChmFileIntent(filePath, fileUri);
        } else if (end.equals("txt")) {
            intent = getTextFileIntent(filePath, false, fileUri);
        }if (end.equals("mp4")) {
            intent = getMp4FileIntent(filePath,fileUri);
        }
        return intent;
    }



    // 播放音乐
    public static Intent openMusic(String filePath, Uri fileUri) {

        File file = new File(filePath);
        System.out.println("打开的文件路径 : " + filePath);
        if (!file.exists()) {
            return null;
        }
        /* 取得扩展名 */
        String fileName = file.getName();
        String end = fileName.substring(file.getName().lastIndexOf(".") + 1,
                file.getName().length()).toLowerCase();
        /* 依扩展名的类型决定MimeType */
        Intent intent = null;
        intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//        Uri uri = Uri.fromFile(new File(filePath));
        Uri uri = uriString(filePath, fileUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "audio/*");
        return intent;
    }


    private static Intent getMp4FileIntent(String param,Uri filUri) {
        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "video/mp4");
        return intent;
    }

    public static Intent getImageFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//        Uri uri = Uri.fromFile(new File(param));
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "image/*");
        return intent;
    }

    // Android获取一个用于打开PPT文件的intent
    public static Intent getPptFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//      Uri uri = Uri.fromFile(new File(param));
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "application/vnd.ms-powerpoint");
        return intent;
    }

    // Android获取一个用于打开Excel文件的intent
    public static Intent getExcelFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "application/vnd.ms-excel");
//      Uri uri = Uri.fromFile(new File(param));
//      intent.setDataAndType(uri, "application/vnd.ms-excel");
        return intent;
    }

    // Android获取一个用于打开Word文件的intent
    public static Intent getWordFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//      Uri uri = Uri.fromFile(new File(param));
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "application/msword");
        return intent;
    }

    // Android获取一个用于打开CHM文件的intent
    public static Intent getChmFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//        Uri uri = Uri.fromFile(new File(param));
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "application/x-chm");
        return intent;
    }

    // Android获取一个用于打开文本文件的intent
    public static Intent getTextFileIntent(String param, boolean paramBoolean, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        if (paramBoolean) {
            Uri uri1 = Uri.parse(param);
            intent.setDataAndType(uri1, "text/plain");
        } else {
            Uri uri2 = Uri.fromFile(new File(param));
//            Uri uri = uriString(param, filUri);
//            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            intent.setDataAndType(uri2, "text/plain");
        }
        return intent;
    }

    // Android获取一个用于打开PDF文件的intent
    public static Intent getPdfFileIntent(String param, Uri filUri) {

        Intent intent = new Intent("android.intent.action.VIEW");
        intent.addCategory("android.intent.category.DEFAULT");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//      Uri uri = Uri.fromFile(new File(param));
        Uri uri = uriString(param, filUri);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(uri, "application/pdf");
        return intent;
    }

    public static Uri uriString(String param, Uri filUri) {
        Uri uri;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            //data是file类型,忘了复制过来
            uri = filUri;
        } else {
            uri = Uri.fromFile(new File(param));
        }
        return uri;
    }

}

4.使用

String systemPath = Environment.getExternalStorageDirectory().getAbsolutePath();

openFile = systemPath + "/" + "测试/" + finalattachmentName + "." + finalattachmentType; File file1 = new File(openFile);

if (!file1.exists()) {

Toast.makeText(MaterialActivity.this, "文件不存在", Toast.LENGTH_SHORT).show();

} else {

Uri fileUri = FileProvider7.getUriForFile(MaterialActivity.this, file1);

Intent in = AndroidFileUtil.openFile(openFile + "", fileUri);

startActivity(in);

}

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