在联系人中放入图片

最新推荐文章于 2022-06-08 21:28:23 发布

最新推荐文章于 2022-06-08 21:28:23 发布 · 135 阅读

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本文介绍如何使用Android开发应用来查看并拨打联系人的电话号码，包括布局设计、权限申请、数据获取、界面展示及拨打电话功能实现。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ImageView
        android:src="@drawable/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
    />
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Name: "
            />
            <TextView android:id="@+id/contact_name"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
            />
        </LinearLayout>
        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Phone: "
            />
            <TextView android:id="@+id/phone_number"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
            />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.CALL_PHONE" />

public class ListContacts extends ListActivity {

    private SimpleCursorAdapter myAdapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Cursor cursor = getContentResolver().query(People.CONTENT_URI, null, null, null, null);
        startManagingCursor(cursor);

        // start mappings
        String[] columns = new String[] {People.NAME, People.NUMBER};
        int[] names = new int[] {R.id.contact_name, R.id.phone_number};

        myAdapter = new SimpleCursorAdapter(this, R.layout.main, cursor, columns, names);
        setListAdapter(myAdapter);
    }

    @Override
    protected void onListItemClick(ListView listView, View view, int position, long id) {
        super.onListItemClick(listView, view, position, id);

        Intent intent = new Intent(Intent.ACTION_CALL);
        Cursor cursor = (Cursor) myAdapter.getItem(position);
        long phoneId = cursor.getLong(cursor.getColumnIndex(People.PRIMARY_PHONE_ID));
        intent.setData(ContentUris.withAppendedId(Phones.CONTENT_URI, phoneId));

        startActivity(intent);
    }
}

这里一定要注意 myAdapter.getItem(position);取出来的对象是cursor

public class MySimpleCursorAdapter extends SimpleCursorAdapter {
    private Cursor _cursor;
    private Context _context;

    public MySimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
        super(context, layout, c, from, to);
        _cursor = c;
        _context = context;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        ImageView imageView = (ImageView) view.findViewById(R.id.contact_image);

        int id = _cursor.getColumnIndex(People._ID);
        Uri uri = ContentUris.withAppendedId(People.CONTENT_URI, _cursor.getLong(id));

        Bitmap bitmap = People.loadContactPhoto(_context, uri, R.drawable.icon, null);

        imageView.setImageBitmap(bitmap);

        super.bindView(view, context, cursor);
    }
}