如何过滤AutoCompleteTextView的结果?

发布于 2024-11-14 22:16:15 字数 1702 浏览 3 评论 0原文

我有一个 AutoCompleteTextView 设置为使用光标在我的联系人上。问题是,我让它正确填充下拉列表,但在我键入后它没有过滤结果。

这是我的光标和适配器设置的代码:

edt_Contact = (AutoCompleteTextView)findViewById(R.id.compose_edtContact);

cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
        new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
        null,null,null);
startManagingCursor(cursor);
String[] from = new String[] { Phone.DISPLAY_NAME, Phone.NUMBER};
int[] to = new int[] { R.id.contact_name, R.id.contact_phoneNo};
adapter = new SimpleCursorAdapter(this, R.layout.simple_contact_textview, cursor, from, to);

edt_Contact.setAdapter(adapter);

这是 simple_contact_textview 的 xml:

<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" android:padding="5sp" android:paddingBottom="5sp" android:background="#FFFFFFFF">
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/contact_name" 
        android:textColor="#FF000000" 
        android:textSize="20sp" 
        android:text="Name">
    </TextView>
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/contact_phoneNo" 
        android:paddingLeft="10sp" 
        android:textColor="#FF000000" 
        android:textSize="20sp" 
        android:text="Number" 
        android:ellipsize="end">
    </TextView>
</LinearLayout>

如何根据用户输入的内容过滤下拉结果?例如,如果用户开始输入“and”,那么“andrew”、“andy”和“mandy”将如何出现?

I have an AutoCompleteTextView set to use a cursor which goes over my Contacts. The problem is, I have it populating the dropdown correctly, but its not filtering the results after I type.

Here is my code for the cursor and setting of the adapter:

edt_Contact = (AutoCompleteTextView)findViewById(R.id.compose_edtContact);

cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
        new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
        null,null,null);
startManagingCursor(cursor);
String[] from = new String[] { Phone.DISPLAY_NAME, Phone.NUMBER};
int[] to = new int[] { R.id.contact_name, R.id.contact_phoneNo};
adapter = new SimpleCursorAdapter(this, R.layout.simple_contact_textview, cursor, from, to);

edt_Contact.setAdapter(adapter);

And here is the xml for simple_contact_textview:

<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" android:padding="5sp" android:paddingBottom="5sp" android:background="#FFFFFFFF">
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/contact_name" 
        android:textColor="#FF000000" 
        android:textSize="20sp" 
        android:text="Name">
    </TextView>
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:id="@+id/contact_phoneNo" 
        android:paddingLeft="10sp" 
        android:textColor="#FF000000" 
        android:textSize="20sp" 
        android:text="Number" 
        android:ellipsize="end">
    </TextView>
</LinearLayout>

How do I filter the dropdown results based on what the user is typing? For instance, if the user starts typing "and", how would I have "andrew", "andy", and "mandy" appear?

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评论(2

权谋诡计 2024-11-21 22:16:15

构造一个 FilterQueryProvider 并将其传递给 adapter.setFilterQueryProvider()

adapter.setFilterQueryProvider(new FilterQueryProvider() {
    public Cursor runQuery(CharSequence constraint) {
        String s = '%' + constraint.toString() + '%';
        return getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
            new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER},
            Phone.DISPLAY_NAME + ' LIKE ? OR ' + Phone.NUMBER + ' LIKE ?',
            new String[] { s, s },
            null);
    }
});

上面的代码将返回与字符串中任何位置匹配的结果(不仅仅是开头)。此外,由于它使用参数化查询,您的用户将无法通过 SQL 注入攻击损坏数据库。

(不在实际计算机附近,所以我无法测试上面的内容——可能其中存在一些语法错误。)

Construct a FilterQueryProvider and pass it into adapter.setFilterQueryProvider().

adapter.setFilterQueryProvider(new FilterQueryProvider() {
    public Cursor runQuery(CharSequence constraint) {
        String s = '%' + constraint.toString() + '%';
        return getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
            new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER},
            Phone.DISPLAY_NAME + ' LIKE ? OR ' + Phone.NUMBER + ' LIKE ?',
            new String[] { s, s },
            null);
    }
});

The code above will return results that match anywhere in the string (not just in the beginning. Also, since it uses parameterized queries, your users won't be able to damage the DB via a SQL injection attack.

(Not near an actual computer, so I can't test the above -- probably some syntax errors in there.)

盗梦空间 2024-11-21 22:16:15

终于尝试了一些有效的方法:

private void initViews() {

    edt_Contact = (AutoCompleteTextView)findViewById(R.id.compose_edtContact);

    cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
            new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
            null,null,null);
    startManagingCursor(cursor);
    String[] from = new String[] { Phone.DISPLAY_NAME, Phone.NUMBER};
    int[] to = new int[] { R.id.contact_name, R.id.contact_phoneNo};
    adapter = new SimpleCursorAdapter(this, R.layout.simple_contact_textview, cursor, from, to);

    adapter.setFilterQueryProvider(new FilterQueryProvider() {
        public Cursor runQuery(CharSequence constraint) {
            return getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
                    new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
                    Phone.DISPLAY_NAME + " LIKE '" + constraint + "%'", 
                    null, null);
        }
    });

    edt_Contact.setAdapter(adapter);
}

抱歉,如果我剥夺了任何人的答案。所有类似的问题似乎都有很低的观点和答案......

Finally tried something that worked:

private void initViews() {

    edt_Contact = (AutoCompleteTextView)findViewById(R.id.compose_edtContact);

    cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
            new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
            null,null,null);
    startManagingCursor(cursor);
    String[] from = new String[] { Phone.DISPLAY_NAME, Phone.NUMBER};
    int[] to = new int[] { R.id.contact_name, R.id.contact_phoneNo};
    adapter = new SimpleCursorAdapter(this, R.layout.simple_contact_textview, cursor, from, to);

    adapter.setFilterQueryProvider(new FilterQueryProvider() {
        public Cursor runQuery(CharSequence constraint) {
            return getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 
                    new String[] {Phone._ID, Phone.DISPLAY_NAME, Phone.NUMBER}, 
                    Phone.DISPLAY_NAME + " LIKE '" + constraint + "%'", 
                    null, null);
        }
    });

    edt_Contact.setAdapter(adapter);
}

Sorry if I robbed anyone of an answer. All questions like this seem to have very low views and answers...

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