老規矩先上圖,注:我這個是其他型別裝置的樣式圖,小米也一樣的

由於小米手機可能對很多地方不見讓,當然對呼叫系統相機時也跟其他裝置不太一

樣,一般情況下他都是底下彈出一個框,選取是否進入相簿或者資料夾

下面就來貼一下程式碼

這是在選取相簿選取視訊的頁面

                      if(PhoneInfo.isMIUI()){//是否是小米裝置,是的話用到彈窗選取入口的方法去選取視訊
                            Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                            intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"video/*");
                            startActivityForResult(Intent.createChooser(intent, "選擇要匯入的視訊"), REQUEST_CODE_PICK);
                        }else{//直接跳到系統相簿去選取視訊
                            Intent intent = new Intent();
                            if (Build.VERSION.SDK_INT < 19) {
                                intent.setAction(Intent.ACTION_GET_CONTENT);
                                intent.setType("video/*");
                            } else {
                                intent.setAction(Intent.ACTION_OPEN_DOCUMENT);
                                intent.addCategory(Intent.CATEGORY_OPENABLE);
                                intent.setType("video/*");
                            }
                            startActivityForResult(Intent.createChooser(intent, "選擇要匯入的視訊"), REQUEST_CODE_PICK);
                        }
 

我們寫一下在相簿選取視訊之後的回撥

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE_PICK && resultCode == RESULT_OK) {//從相簿選取視訊
            String videoPath = GetPathFromUri.getPath(this, data.getData());
            initVideo(videoPath);
        }
    }
 

在這裡我把獲取路徑封裝成了一個類,貼一下這個類的代嗎

public class GetPathFromUri {

    @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.
     * @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;
        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 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());
    }
}
 

我在這裡判斷了是否是小米手機,判斷識別是否是小米裝置可以參考我的另一篇部落格

題需要處理,其他手機如果用這種方法的話可能會多此一舉了,具體也是看需求了,我們看下如果其他手機用這種方法的情況下的效果圖.