AndroidX使用Intent打开文件

太过爱你忘了你带给我的痛 2023-02-17 01:28 88阅读 0赞

### 步骤 ###

*   *  1. 创建FileProvider放在项目xml里面
     *  2. 在AndroidManifest添加provider
     *  3. 打开文件

## 1. 创建FileProvider放在项目xml里面 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTM0NDc4_size_16_color_FFFFFF_t_70]

<?xml version="1.0" encoding="utf-8"?>
    <paths xmlns:android="http://schemas.android.com/apk/res/android">
    
        
        <root-path
            name="root-path"
            path="" />
        
        <external-path
            name="download"
            path="/glacier/house/download/" />
    
    </paths>

## 2. 在AndroidManifest添加provider ##

*  马赛克部分填写你的包名  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTM0NDc4_size_16_color_FFFFFF_t_70 1]

## 3. 打开文件 ##

/**
         * 打開文件
         * @param filepath 文件完整路徑
         * @param context
         */
        public static void openAndroidFile(String filepath, Context context) {
        
            Intent handlerIntent = new Intent();
            File file = new File(filepath);
            handlerIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            //动作，查看
            handlerIntent.setAction(Intent.ACTION_VIEW);
            Uri uri = Uri.fromFile(file);
            String type = getMIMEType(file);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        
                handlerIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                uri = FileProvider.getUriForFile(context, context.getPackageName() + ".fileprovider", file);
    
                handlerIntent.setDataAndType(uri, type);
                context.startActivity(handlerIntent);
            } else {
        
                handlerIntent.setDataAndType(uri, type);
                context.startActivity(handlerIntent);
            }
        }

// 系统提供的解析文件类型的方法
    private static void openFile(Context context, File f) {
        
            Intent myIntent = new Intent(android.content.Intent.ACTION_VIEW);
            String extension = android.webkit.MimeTypeMap.getFileExtensionFromUrl(Uri.fromFile(f).toString());
            String mimetype = android.webkit.MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
            myIntent.setDataAndType(Uri.fromFile(f),mimetype);
            context.startActivity(myIntent);
     
        }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTM0NDc4_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200610163231102.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxOTM0NDc4,size_16,color_FFFFFF,t_70
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