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Java DocumentsContract.buildChildDocumentsUriUsingTree方法代码示例

本文整理汇总了Java中android.provider.DocumentsContract.buildChildDocumentsUriUsingTree方法的典型用法代码示例。如果您正苦于以下问题：Java DocumentsContract.buildChildDocumentsUriUsingTree方法的具体用法？Java DocumentsContract.buildChildDocumentsUriUsingTree怎么用？Java DocumentsContract.buildChildDocumentsUriUsingTree使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类android.provider.DocumentsContract的用法示例。


在下文中一共展示了DocumentsContract.buildChildDocumentsUriUsingTree方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: listFiles

import android.provider.DocumentsContract; //导入方法依赖的package包/类
public static Uri[] listFiles(Context context, Uri self) {
    final ContentResolver resolver = context.getContentResolver();
    final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(self,
            DocumentsContract.getDocumentId(self));
    final ArrayList<Uri> results = new ArrayList<Uri>();

    Cursor c = null;
    try {
        c = resolver.query(childrenUri, new String[] {
                DocumentsContract.Document.COLUMN_DOCUMENT_ID }, null, null, null);
        while (c.moveToNext()) {
            final String documentId = c.getString(0);
            final Uri documentUri = DocumentsContract.buildDocumentUriUsingTree(self,
                    documentId);
            results.add(documentUri);
        }
    } catch (Exception e) {
        Log.w(TAG, "Failed query: " + e);
    } finally {
        closeQuietly(c);
    }

    return results.toArray(new Uri[results.size()]);
}
开发者ID:commonsguy，项目名称:cwac-document，代码行数:25，代码来源:DocumentsContractApi21.java

示例2: listFiles

import android.provider.DocumentsContract; //导入方法依赖的package包/类
public static Uri[] listFiles(Context context, Uri self) {
    ContentResolver resolver = context.getContentResolver();
    Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(self, DocumentsContract.getDocumentId(self));
    ArrayList<Uri> results = new ArrayList();
    Cursor c = null;
    try {
        c = resolver.query(childrenUri, new String[]{"document_id"}, null, null, null);
        while (c.moveToNext()) {
            results.add(DocumentsContract.buildDocumentUriUsingTree(self, c.getString(0)));
        }
    } catch (Exception e) {
        Log.w(TAG, "Failed query: " + e);
    } finally {
        closeQuietly(c);
    }
    return (Uri[]) results.toArray(new Uri[results.size()]);
}
开发者ID:JackChan1999，项目名称:boohee_v5.6，代码行数:18，代码来源:DocumentsContractApi21.java

示例3: getDirItemsNumber

import android.provider.DocumentsContract; //导入方法依赖的package包/类
private static int getDirItemsNumber(Context ctx, Uri u)
{
    int itemsNumber = 0;
    Cursor c = null;
    try
    {
        ContentResolver cr = ctx.getContentResolver();
        String dirId = DocumentsContract.getDocumentId(u);
        Uri dirUri = DocumentsContract.buildChildDocumentsUriUsingTree(u, dirId);
        c = cr.query(dirUri, projection, null, null, null);
        if (c != null)
        {
            itemsNumber = c.getCount();
        }
    }
    catch (Exception e)
    {
        // notning to do;
    }
    finally
    {
        if (c != null)
        {
            c.close();
        }
    }
    return itemsNumber;
}
开发者ID:mkulesh，项目名称:microMathematics，代码行数:29，代码来源:AdapterDocuments.java

示例4: listFiles

import android.provider.DocumentsContract; //导入方法依赖的package包/类
public static Uri[] listFiles(Context context, Uri self) {
    final ContentResolver resolver = context.getContentResolver();
    final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(self,
            DocumentsContract.getDocumentId(self));
    final ArrayList<Uri> results = new ArrayList<>();

    Cursor c = null;
    try {
        c = resolver.query(childrenUri, new String[] {
                DocumentsContract.Document.COLUMN_DOCUMENT_ID }, null, null, null);
        if (null != c) {
            while (c.moveToNext()) {
                final String documentId = c.getString(0);
                final Uri documentUri = DocumentsContract.buildDocumentUriUsingTree(self,
                        documentId);
                results.add(documentUri);
            }
        }
    } catch (Exception e) {
        // Log.w(TAG, "Failed query: " + e);
    } finally {
        closeQuietly(c);
    }

    return results.toArray(new Uri[results.size()]);
}
开发者ID:seven332，项目名称:UniFile，代码行数:27，代码来源:DocumentsContractApi21.java

示例5: findChildDocument

import android.provider.DocumentsContract; //导入方法依赖的package包/类
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private static Uri findChildDocument(ContentResolver contentResolver, Uri uri, String displayName) {
	String[] projection = {DocumentsContract.Document.COLUMN_DOCUMENT_ID,
			DocumentsContract.Document.COLUMN_DISPLAY_NAME};
	Uri childUri = DocumentsContract.buildChildDocumentsUriUsingTree(uri,
			DocumentsContract.getDocumentId(uri));
	Cursor cursor = contentResolver.query(childUri, projection, null, null, null);
	try {
		while (cursor.moveToNext()) {
			if (displayName.equals(cursor.getString(1))) {
				return DocumentsContract.buildDocumentUriUsingTree(uri, cursor.getString(0));
			}
		}
	} finally {
		cursor.close();
	}
	return null;
}
开发者ID:Mishiranu，项目名称:Dashchan，代码行数:19，代码来源:IOUtils.java

示例6: getDocumentFileForUri

import android.provider.DocumentsContract; //导入方法依赖的package包/类
public static DocumentFile getDocumentFileForUri(Context context, Uri uri) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException, ClassNotFoundException {
    Class<?> c = Class.forName("android.support.v4.provider.TreeDocumentFile");
    Constructor<?> constructor = c.getDeclaredConstructor(DocumentFile.class, Context.class, Uri.class);
    constructor.setAccessible(true);
    Uri docUri;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        docUri = DocumentsContract.buildChildDocumentsUriUsingTree(uri, uri.getLastPathSegment());
    else
        docUri = buildDocumentUriUsingTree(uri);
    return (DocumentFile) constructor.newInstance(null, context, docUri);
}
开发者ID:archos-sa，项目名称:aos-FileCoreLibrary，代码行数:12，代码来源:DocumentUriBuilder.java

示例7: getImagesFromTreeUri

import android.provider.DocumentsContract; //导入方法依赖的package包/类
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private List<Uri> getImagesFromTreeUri(final Uri treeUri, final int maxImages) {
    List<Uri> images = new ArrayList<>();
    Queue<String> directories = new LinkedList<>();
    directories.add(DocumentsContract.getTreeDocumentId(treeUri));
    while (images.size() < maxImages && !directories.isEmpty()) {
        String parentDocumentId = directories.poll();
        final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(treeUri,
                parentDocumentId);
        try (Cursor children = getContentResolver().query(childrenUri,
                    new String[]{DocumentsContract.Document.COLUMN_DOCUMENT_ID, DocumentsContract.Document.COLUMN_MIME_TYPE},
                    null, null, null)) {
            if (children == null) {
                continue;
            }
            while (children.moveToNext()) {
                String documentId = children.getString(
                        children.getColumnIndex(DocumentsContract.Document.COLUMN_DOCUMENT_ID));
                String mimeType = children.getString(
                        children.getColumnIndex(DocumentsContract.Document.COLUMN_MIME_TYPE));
                if (DocumentsContract.Document.MIME_TYPE_DIR.equals(mimeType)) {
                    directories.add(documentId);
                } else if (mimeType != null && mimeType.startsWith("image/")) {
                    // Add images to the list
                    images.add(DocumentsContract.buildDocumentUriUsingTree(treeUri, documentId));
                }
                if (images.size() == maxImages) {
                    break;
                }
            }
        } catch (SecurityException|NullPointerException e) {
            // No longer can read this URI, which means no children from this URI
        }
    }
    return images;
}
开发者ID:romannurik，项目名称:muzei，代码行数:37，代码来源:GallerySettingsActivity.java

示例8: addAllImagesFromTree

import android.provider.DocumentsContract; //导入方法依赖的package包/类
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private int addAllImagesFromTree(final List<Uri> allImages, final Uri treeUri, final String parentDocumentId) {
    final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(treeUri,
            parentDocumentId);
    Cursor children = null;
    try {
        children = getContentResolver().query(childrenUri,
                new String[]{DocumentsContract.Document.COLUMN_DOCUMENT_ID, DocumentsContract.Document.COLUMN_MIME_TYPE},
                null, null, null);
    } catch (NullPointerException|IllegalArgumentException|SecurityException e) {
        Log.e(TAG, "Error reading " + childrenUri, e);
    }
    if (children == null) {
        return 0;
    }
    int numImagesAdded = 0;
    while (children.moveToNext()) {
        String documentId = children.getString(
                children.getColumnIndex(DocumentsContract.Document.COLUMN_DOCUMENT_ID));
        String mimeType = children.getString(
                children.getColumnIndex(DocumentsContract.Document.COLUMN_MIME_TYPE));
        if (DocumentsContract.Document.MIME_TYPE_DIR.equals(mimeType)) {
            // Recursively explore all directories
            numImagesAdded += addAllImagesFromTree(allImages, treeUri, documentId);
        } else if (mimeType != null && mimeType.startsWith("image/")) {
            // Add images to the list
            if (allImages != null) {
                allImages.add(DocumentsContract.buildDocumentUriUsingTree(treeUri, documentId));
            }
            numImagesAdded++;
        }
    }
    children.close();
    return numImagesAdded;
}
开发者ID:romannurik，项目名称:muzei，代码行数:36，代码来源:GalleryArtSource.java

示例9: getChildren

import android.provider.DocumentsContract; //导入方法依赖的package包/类
public final static ArrayList<SAFItem> getChildren(Context ctx, Uri u)
{
    Cursor c = null;
    try
    {
        ContentResolver cr = ctx.getContentResolver();
        String document_id = DocumentsContract.getDocumentId(u);
        Uri children_uri = DocumentsContract.buildChildDocumentsUriUsingTree(u, document_id);
        c = cr.query(children_uri, projection, null, null, null);
        if (c != null)
        {
            ArrayList<SAFItem> tmp_list = new ArrayList<SAFItem>();
            if (c.getCount() == 0)
            {
                return tmp_list;
            }
            int ici = c.getColumnIndex(Document.COLUMN_DOCUMENT_ID);
            int nci = c.getColumnIndex(Document.COLUMN_DISPLAY_NAME);
            int sci = c.getColumnIndex(Document.COLUMN_SIZE);
            int mci = c.getColumnIndex(Document.COLUMN_MIME_TYPE);
            int dci = c.getColumnIndex(Document.COLUMN_LAST_MODIFIED);
            c.moveToFirst();
            do
            {
                SAFItem item = new SAFItem();
                String id = c.getString(ici);
                item.origin = DocumentsContract.buildDocumentUriUsingTree(u, id);
                item.attr = c.getString(mci);
                item.dir = Document.MIME_TYPE_DIR.equals(item.attr);
                item.name = c.getString(nci);
                item.size = c.getLong(sci);
                item.date = new Date(c.getLong(dci));
                if (item.dir)
                {
                    item.size = -1;
                    item.attr = Integer.toString(getDirItemsNumber(ctx, (Uri) item.origin)) + " "
                            + ctx.getString(R.string.dialog_list_items);
                }
                tmp_list.add(item);
            }
            while (c.moveToNext());
            return tmp_list;
        }
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    finally
    {
        if (c != null)
        {
            c.close();
        }
    }
    return null;
}
开发者ID:mkulesh，项目名称:microMathematics，代码行数:58，代码来源:AdapterDocuments.java

示例10: handleOpenDocumentTree

import android.provider.DocumentsContract; //导入方法依赖的package包/类
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void handleOpenDocumentTree(Uri treeUri) {
    String parentDocumentId = DocumentsContract.getTreeDocumentId(treeUri);
    Uri parentDocumentUri = DocumentsContract.buildDocumentUri(BuildConfig.DOCUMENTS_AUTHORITY, parentDocumentId);
    String parentDisplayName = parentDocumentId;
    Cursor cursor = getContentResolver().query(parentDocumentUri, null, null, null, null);
    try {
        // moveToFirst() returns false if the cursor has 0 rows.  Very handy for
        // "if there's anything to look at, look at it" conditionals.
        if (cursor != null && cursor.moveToFirst()) {
            // Note it's called "Display Name".  This is
            // provider-specific, and might not necessarily be the file name.
            parentDisplayName = cursor.getString(
                    cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
            mLastReturnedDocumentUri = null;
            mLastReturnedDocumentTreeUri = treeUri;
        }
    } finally {
        if (cursor != null)
            cursor.close();
    }
    mReturnedDetailsSwitcher.setDisplayedChild(1);
    Uri documentUri = DocumentsContract.buildChildDocumentsUriUsingTree(treeUri, parentDocumentId);
    cursor = getContentResolver().query(documentUri, null, null, null, null);
    if (cursor == null) {
        mReturnedName.setText("");
        mReturnedChildren.setText("");
        return;
    }
    mReturnedName.setText(getString(R.string.parent_document_title, cursor.getCount(), parentDisplayName));
    StringBuilder children = new StringBuilder();
    while (cursor.moveToNext()) {
        // Note it's called "Display Name".  This is
        // provider-specific, and might not necessarily be the file name.
        String displayName = cursor.getString(
                cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
        children.append(displayName);
        if (!cursor.isLast()) {
            children.append('\n');
        }
    }
    mReturnedChildren.setText(children);
    cursor.close();
}
开发者ID:ianhanniballake，项目名称:LocalStorage，代码行数:45，代码来源:MainActivity.java


注：本文中的android.provider.DocumentsContract.buildChildDocumentsUriUsingTree方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。