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GetPathFromUri4kitkat【Android 4.4 kitkat以上及以下根据uri获取路径的方法】

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前言

在Android4.4之前和之后,通过Intent调用文件管理器选择文件,获取的文件uri地址形式是不同的。

Android6.0 content://com.android.providers.media.documents/document/image%3A593410

Android4.2.2 file:///storage/emulated/0/Pictures/Screenshots/Screenshot_2017-04-17-14-39-13.png

所以,当我们需要用到文件的绝对路径地址(/storage/emulated/0/Pictures/Screenshots/Screenshot_20170706-113240.png)的时候,则需要一个通用的方法。

效果图

Android 6.0Android4.2.2
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代码分析

一般使用getPath( context,uri)方法即可。

使用步骤

一、项目组织结构图

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注意事项:

1、导入类文件后需要change包名以及重新import R文件路径

2、Values目录下的文件(strings.xml、dimens.xml、colors.xml等),如果项目中存在,则复制里面的内容,不要整个覆盖

二、导入步骤

将GetPathFromUri4kitkat.java文件复制到项目中

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package com.why.project.getpathfromuri4kitkatdemo.utils;import android.annotation.SuppressLint;import android.content.ContentUris;import android.content.Context;import android.database.Cursor;import android.net.Uri;import android.os.Build;import android.os.Environment;import android.provider.DocumentsContract;import android.provider.MediaStore;/** * @CreateBy HaiyuKing * @Used Android 4.4 kitkat以上及以下根据uri获取路径的方法 * @参考资料 http://www.2cto.com/kf/201502/376975.html */public class GetPathFromUri4kitkat {    /**     * 专为Android4.4设计的从Uri获取文件绝对路径,以前的方法已不好使     * @param uri - Android6.0 content://com.android.providers.media.documents/document/image%3A593410     *            Android4.2.2 file:///storage/emulated/0/Pictures/Screenshots/Screenshot_2017-04-17-14-39-13.png     * @return Android6.0 /storage/emulated/0/Pictures/Screenshots/Screenshot_20170706-113240.png     *          Android4.2.2 /storage/emulated/0/Pictures/Screenshots/Screenshot_2017-04-17-14-39-13.png     */    @SuppressLint("NewApi")    public static String getPath(final Context context, final Uri uri) {         final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;         // DocumentProvider        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {            // ExternalStorageProvider            if (isExternalStorageDocument(uri)) {                final String docId = DocumentsContract.getDocumentId(uri);                final String[] split = docId.split(":");                final String type = split[0];                 if ("primary".equalsIgnoreCase(type)) {                    return Environment.getExternalStorageDirectory() + "/" + split[1];                }                 // TODO handle non-primary volumes            }            // DownloadsProvider            else if (isDownloadsDocument(uri)) {                 final String id = DocumentsContract.getDocumentId(uri);                final Uri contentUri = ContentUris.withAppendedId(                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));                 return getDataColumn(context, contentUri, null, null);            }            // MediaProvider            else if (isMediaDocument(uri)) {                final String docId = DocumentsContract.getDocumentId(uri);                final String[] split = docId.split(":");                final String type = split[0];                 Uri contentUri = null;                if ("image".equals(type)) {                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;                } else if ("video".equals(type)) {                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;                } else if ("audio".equals(type)) {                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;                }                 final String selection = "_id=?";                final String[] selectionArgs = new String[] { split[1] };                 return getDataColumn(context, contentUri, selection, selectionArgs);            }        }        // MediaStore (and general)        else if ("content".equalsIgnoreCase(uri.getScheme())) {            return getDataColumn(context, uri, null, null);        }        // File        else if ("file".equalsIgnoreCase(uri.getScheme())) {            return uri.getPath();        }         return null;    }     /**     * Get the value of the data column for this Uri. This is useful for     * MediaStore Uris, and other file-based ContentProviders.     *      * @param context     *            The context.     * @param uri     *            The Uri to query.     * @param selection     *            (Optional) Filter used in the query. 构造筛选语句     * @param selectionArgs     *            (Optional) Selection arguments used in the query.     * @return The value of the _data column, which is typically a file path.     */    public static String getDataColumn(Context context, Uri uri, String selection,            String[] selectionArgs) {         Cursor cursor = null;        //筛选列        final String column = MediaStore.Files.FileColumns.DATA;//"_data"        final String[] projection = { column };         try {            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,                    null);            if (cursor != null && cursor.moveToFirst()) {                final int column_index = cursor.getColumnIndexOrThrow(column);                return cursor.getString(column_index);            }        } finally {            if (cursor != null)                cursor.close();        }        return null;    }     /**     * @param uri     *            The Uri to check.     * @return Whether the Uri authority is ExternalStorageProvider.     */    public static boolean isExternalStorageDocument(Uri uri) {        return "com.android.externalstorage.documents".equals(uri.getAuthority());    }     /**     * @param uri     *            The Uri to check.     * @return Whether the Uri authority is DownloadsProvider.     */    public static boolean isDownloadsDocument(Uri uri) {        return "com.android.providers.downloads.documents".equals(uri.getAuthority());    }     /**     * @param uri     *            The Uri to check.     * @return Whether the Uri authority is MediaProvider.     */    public static boolean isMediaDocument(Uri uri) {        return "com.android.providers.media.documents".equals(uri.getAuthority());    }}
GetPathFromUri4kitkat

在AndroidManifest.xml中添加权限

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"          package="com.why.project.getpathfromuri4kitkatdemo">    <!-- ======================(GetPathFromUri4kitkat)========================== -->    <!-- 向SD卡读取数据权限 -->    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN"/>                <category android:name="android.intent.category.LAUNCHER"/>            </intent-filter>        </activity>    </application></manifest>

 添加运行时权限的处理(本demo中采用的是修改targetSDKVersion=22)

三、使用方法

package com.why.project.getpathfromuri4kitkatdemo;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.TextView;import com.why.project.getpathfromuri4kitkatdemo.utils.GetPathFromUri4kitkat;public class MainActivity extends AppCompatActivity {    private static final String TAG = "MainActivity";    private Button btn_openFile;    private TextView tv_filePath;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initViews();        initEvents();    }    private void initViews() {        btn_openFile = (Button) findViewById(R.id.btn_openFile);        tv_filePath = (TextView) findViewById(R.id.tv_filePath);    }    private void initEvents() {        btn_openFile.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent innerIntent = new Intent(Intent.ACTION_GET_CONTENT);                String IMAGE_UNSPECIFIED = "*/*";                innerIntent.setType(IMAGE_UNSPECIFIED); // 查看类型                Intent wrapperIntent = Intent.createChooser(innerIntent, "File Browser");                MainActivity.this.startActivityForResult(wrapperIntent, 1111);            }        });    }    /*=========================================实现打开文件管理器功能==============================================*/    @Override    public void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        Log.w(TAG, "{onActivityResult}resultCode=" + resultCode);        Log.w(TAG, "{onActivityResult}requestCode=" + requestCode);        if (resultCode == Activity.RESULT_OK) {            //调用文件管理器选择文件的回调            if (requestCode == 1111) {                Uri result = data =http://www.mamicode.com/= null ? null : data.getData();                Log.w(TAG, "{onActivityResult}result=" + result);                tv_filePath.setText("Uri:"+result.toString());                String pathStr = GetPathFromUri4kitkat.getPath(MainActivity.this,result);                Log.w(TAG, "{onActivityResult}pathStr=" + pathStr);                tv_filePath.setText(tv_filePath.getText() + "\n\n" + "Path:"+pathStr);            }        }    }}

混淆配置

参考资料

Android 4.4 kitkat以上及以下根据uri获取路径的方法

项目demo下载地址

https://github.com/haiyuKing/GetPathFromUri4kitkatDemo

GetPathFromUri4kitkat【Android 4.4 kitkat以上及以下根据uri获取路径的方法】