Android打開系統(tǒng)拍照&相冊(cè)獲取頭像

現(xiàn)在許多應(yīng)用都有上傳頭像的功能涛菠，再次奉上代開系統(tǒng)相冊(cè)或打開系統(tǒng)相機(jī)拍照的實(shí)現(xiàn)，有的同學(xué)在測(cè)試小米手機(jī)上打開選擇相冊(cè)有奔潰，此代碼已完美解決此問題...

樓主，做的頭像需要經(jīng)過裁剪之后和圓形處理...

1.設(shè)置點(diǎn)擊打開相機(jī)&打開系統(tǒng)圖庫

                @Override
                public void onClick(View v) {
                    // 打開系統(tǒng)拍照程
                    Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                    startActivityForResult(camera, CAMERA);
                }
            

                @Override
                public void onClick(View v) {
                    // 打開系統(tǒng)圖庫選擇圖片
                    Intent picture = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                    startActivityForResult(picture, PICTURE);
                }

2.重寫帶結(jié)果啟動(dòng)的回調(diào)onActivityResult

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == CAMERA && resultCode == RESULT_OK && data != null) {

            // 拍照
            Bundle bundle = data.getExtras();
            // 獲取相機(jī)返回的數(shù)據(jù)，并轉(zhuǎn)換為圖片格式
            Bitmap bitmap = (Bitmap) bundle.get("data");
            // bitmap圓形裁剪
//            bitmap = BitmapUtils.zoom(bitmap, DensityUtil.dp2px(this, 62), DensityUtil.dp2px(this, 62));
            bitmap = BitmapUtils.zoom(bitmap, DensityUtil.dp2px(this, 20), DensityUtil.dp2px(this, 20));
            Bitmap circleBitmap = BitmapUtils.circleBitmap(bitmap);

            //TODO 將圖片上傳到服務(wù)器
//            ivIcon.setImageBitmap(circleBitmap);
            uploadHeadpic(bitmap);
            // 將圖片保存在本地
            try {
                saveImage(circleBitmap);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        } else if (requestCode == PICTURE && resultCode == RESULT_OK && data != null) {
            //圖庫

            String pathResult = null;  // 獲取圖片路徑的方法調(diào)用
            try {
                Uri uri = data.getData();
                pathResult = getPath(uri);
                Log.e("TAG", "圖片路徑===" + pathResult);
            } catch (Exception e) {
                e.printStackTrace();
            }

            //這里返回的uri情況就有點(diǎn)多了
            //**:在4.4.2之前返回的uri是:content://media/external/images/media/3951或者file://....在4.4.2返回的是content://com.android.providers.media.documents/document/image:3951或者
            //總結(jié)：uri的組成告抄，eg:content://com.example.project:200/folder/subfolder/etc
            //content:--->"scheme"
            //com.example.project:200-->"host":"port"--->"authority"[主機(jī)地址+端口(省略) =authority]
            //folder/subfolder/etc-->"path" 路徑部分
            //android各個(gè)不同的系統(tǒng)版本,對(duì)于獲取外部存儲(chǔ)上的資源，返回的Uri對(duì)象都可能各不一樣,所以要保證無論是哪個(gè)系統(tǒng)版本都能正確獲取到圖片資源的話
            //就需要針對(duì)各種情況進(jìn)行一個(gè)處理了

            Bitmap decodeFile = BitmapFactory.decodeFile(pathResult);
            Bitmap zoomBitmap = BitmapUtils.zoom(decodeFile, DensityUtil.dp2px(this, 20), DensityUtil.dp2px(this, 20));
            // bitmap圓形裁剪p
            Bitmap circleImage = BitmapUtils.circleBitmap(zoomBitmap);
            // 真實(shí)項(xiàng)目當(dāng)中嵌牺，是需要上傳到服務(wù)器的..這步我們就不做了打洼。
            uploadHeadpic(zoomBitmap);
            try {
                // 保存圖片到本地
                saveImage(circleImage);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }
    }

3.獲取圖片路徑

// 根據(jù)系統(tǒng)相冊(cè)選擇的文件獲取路徑
    @SuppressLint("NewApi")
    private String getPath(Uri uri) {
//        int sdkVersion = Build.VERSION.SDK_INT;
        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
        // 高于4.4.2的版本
//        if (sdkVersion >= 19) {
        if (isKitKat && DocumentsContract.isDocumentUri(mContext, uri)) {
            Log.e("TAG", "uri auth: " + uri.getAuthority());
            if (isExternalStorageDocument(uri)) {
                String docId = DocumentsContract.getDocumentId(uri);
                String[] split = docId.split(":");
                String type = split[0];
                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }
            } 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(this, contentUri, null, null);
            } 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(this, contentUri, selection, selectionArgs);
            } else if (isMedia(uri)) {
                String[] proj = {MediaStore.Images.Media.DATA};
                Cursor actualimagecursor = this.managedQuery(uri, proj, null, null, null);
                int actual_image_column_index = actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                actualimagecursor.moveToFirst();
                return actualimagecursor.getString(actual_image_column_index);
            }
        } else if ("content".equalsIgnoreCase(uri.getScheme())) {
            // Return the remote address
            if (isGooglePhotosUri(uri))
                return uri.getLastPathSegment();
            return getDataColumn(this, uri, null, null);

        } else if ("file".equalsIgnoreCase(uri.getScheme())) { // File
            return uri.getPath();
        }
        return null;
    }

private String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {column};
        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
            if (cursor != null && cursor.moveToFirst()) {
                final int index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }


    private boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

    public static boolean isMedia(Uri uri) {
        return "media".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is Google Photos.
     */
    public static boolean isGooglePhotosUri(Uri uri) {
        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
    }

以上就是比較完整的代碼了...

Thanks all.

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