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Android打開手機(jī)相冊(cè)獲取圖片路徑

更新時(shí)間：2019年04月25日 11:04:41 作者：曉果博客

這篇文章主要為大家詳細(xì)介紹了Android打開手機(jī)相冊(cè)獲取圖片路徑，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了Android打開手機(jī)相冊(cè)獲取圖片路徑的具體代碼，供大家參考，具體內(nèi)容如下

根據(jù)打開相機(jī)返回的Uri uri = data.getData();獲取該相片的真正SD卡路徑！

權(quán)限

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

動(dòng)態(tài)申請(qǐng)權(quán)限

String[] mPermissionList = new String[]{
   Manifest.permission.WRITE_EXTERNAL_STORAGE,
   Manifest.permission.READ_EXTERNAL_STORAGE};
 public static final int REQUEST_PICK_IMAGE = 11101;

打開手機(jī)相冊(cè)

ActivityCompat.requestPermissions(MainActivity.this, mPermissionList, 100);

@Override
 public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
  super.onRequestPermissionsResult(requestCode, permissions, grantResults);
  switch (requestCode) {
   case 100:
    boolean writeExternalStorage = grantResults[0] == PackageManager.PERMISSION_GRANTED;
    boolean readExternalStorage = grantResults[1] == PackageManager.PERMISSION_GRANTED;
    if (grantResults.length > 0 && writeExternalStorage && readExternalStorage) {
     getImage();
    } else {
     Toast.makeText(this, "請(qǐng)?jiān)O(shè)置必要權(quán)限", Toast.LENGTH_SHORT).show();
    }

    break;
  }
 }

 private void getImage() {
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
   startActivityForResult(new Intent(Intent.ACTION_GET_CONTENT).setType("image/*"),
     REQUEST_PICK_IMAGE);
  } else {
   Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
   intent.addCategory(Intent.CATEGORY_OPENABLE);
   intent.setType("image/*");
   startActivityForResult(intent, REQUEST_PICK_IMAGE);
  }
 }

獲取相冊(cè)返回的Uri

@Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  super.onActivityResult(requestCode, resultCode, data);
  if (resultCode == Activity.RESULT_OK) {
   switch (requestCode) {
    case REQUEST_PICK_IMAGE:
     if (data != null) {
      String realPathFromUri = RealPathFromUriUtils.getRealPathFromUri(this, data.getData());
     } else {
      Toast.makeText(this, "圖片損壞，請(qǐng)重新選擇", Toast.LENGTH_SHORT).show();
     }

     break;
   }
  }
 }

這里的data.getData()返回的就是Uri，realPathFromUri 為真正路徑

獲取真正路徑

package com.example.richeditortest;

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.provider.DocumentsContract;
import android.provider.MediaStore;

public class RealPathFromUriUtils {
 /**
  * 根據(jù)Uri獲取圖片的絕對(duì)路徑
  *
  * @param context 上下文對(duì)象
  * @param uri  圖片的Uri
  * @return 如果Uri對(duì)應(yīng)的圖片存在, 那么返回該圖片的絕對(duì)路徑, 否則返回null
  */
 public static String getRealPathFromUri(Context context, Uri uri) {
  int sdkVersion = Build.VERSION.SDK_INT;
  if (sdkVersion >= 19) { // api >= 19
   return getRealPathFromUriAboveApi19(context, uri);
  } else { // api < 19
   return getRealPathFromUriBelowAPI19(context, uri);
  }
 }

 /**
  * 適配api19以下(不包括api19),根據(jù)uri獲取圖片的絕對(duì)路徑
  *
  * @param context 上下文對(duì)象
  * @param uri  圖片的Uri
  * @return 如果Uri對(duì)應(yīng)的圖片存在, 那么返回該圖片的絕對(duì)路徑, 否則返回null
  */
 private static String getRealPathFromUriBelowAPI19(Context context, Uri uri) {
  return getDataColumn(context, uri, null, null);
 }

 /**
  * 適配api19及以上,根據(jù)uri獲取圖片的絕對(duì)路徑
  *
  * @param context 上下文對(duì)象
  * @param uri  圖片的Uri
  * @return 如果Uri對(duì)應(yīng)的圖片存在, 那么返回該圖片的絕對(duì)路徑, 否則返回null
  */
 @SuppressLint("NewApi")
 private static String getRealPathFromUriAboveApi19(Context context, Uri uri) {
  String filePath = null;
  if (DocumentsContract.isDocumentUri(context, uri)) {
   // 如果是document類型的 uri, 則通過document id來進(jìn)行處理
   String documentId = DocumentsContract.getDocumentId(uri);
   if (isMediaDocument(uri)) { // MediaProvider
    // 使用':'分割
    String id = documentId.split(":")[1];

    String selection = MediaStore.Images.Media._ID + "=?";
    String[] selectionArgs = {id};
    filePath = getDataColumn(context, MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection, selectionArgs);
   } else if (isDownloadsDocument(uri)) { // DownloadsProvider
    Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(documentId));
    filePath = getDataColumn(context, contentUri, null, null);
   }
  } else if ("content".equalsIgnoreCase(uri.getScheme())) {
   // 如果是 content 類型的 Uri
   filePath = getDataColumn(context, uri, null, null);
  } else if ("file".equals(uri.getScheme())) {
   // 如果是 file 類型的 Uri,直接獲取圖片對(duì)應(yīng)的路徑
   filePath = uri.getPath();
  }
  return filePath;
 }

 /**
  * 獲取數(shù)據(jù)庫表中的 _data 列，即返回Uri對(duì)應(yīng)的文件路徑
  *
  * @return
  */
 private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
  String path = null;

  String[] projection = new String[]{MediaStore.Images.Media.DATA};
  Cursor cursor = null;
  try {
   cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
   if (cursor != null && cursor.moveToFirst()) {
    int columnIndex = cursor.getColumnIndexOrThrow(projection[0]);
    path = cursor.getString(columnIndex);
   }
  } catch (Exception e) {
   if (cursor != null) {
    cursor.close();
   }
  }
  return path;
 }

 /**
  * @param uri the Uri to check
  * @return Whether the Uri authority is MediaProvider
  */
 private static boolean isMediaDocument(Uri uri) {
  return "com.android.providers.media.documents".equals(uri.getAuthority());
 }

 /**
  * @param uri the Uri to check
  * @return Whether the Uri authority is DownloadsProvider
  */
 private static boolean isDownloadsDocument(Uri uri) {
  return "com.android.providers.downloads.documents".equals(uri.getAuthority());
 }
}

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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