android2.2根据电话号码查询联系人姓名的方法

public class AndroidTest extends Activity {
	private static final String TAG = "AndroidTest";

	private TextView m_TextView;
	private EditText m_EditText;
    
	private String mNumber;
    
	@Override
	public void onCreate(Bundle savedInstanceState){
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
        
		m_TextView = (TextView) findViewById(R.id.TextView01);
		m_EditText = (EditText) findViewById(R.id.EditText01);

		m_TextView.setTextSize(20);
		/**
		* 设置当m_EditText中为空时提示的内容  
		* 在XML中同样可以实现：android:hint="请输入账号"
		*/
		m_EditText.setHint("请输入账号");

		/* 设置EditText事件监听 */
		m_EditText.setOnKeyListener(new EditText.OnKeyListener() {
		public boolean onKey(View arg0, int arg1, KeyEvent arg2)
		{
			// TODO Auto-generated method stub
			// 得到文字，将其显示到TextView中
//			m_TextView.setText("文本框中内容是：" + m_EditText.getText().toString());
			return false;
		}
		});
		
		m_EditText.setOnFocusChangeListener(new OnFocusChangeListener() {

			public void onFocusChange(View v, boolean hasFocus) {
				// TODO Auto-generated method stub
				mNumber = ((EditText)v).getText().toString();
				Log.d(TAG, "mNumber = " + mNumber);
				getPeople();
			}
			
		});
		
		m_EditText.addTextChangedListener(new TextWatcher() {

			public void afterTextChanged(Editable s) {
				// TODO Auto-generated method stub
				
			}

			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {
				// TODO Auto-generated method stub
				
			}

			public void onTextChanged(CharSequence s, int start, int before,
					int count) {
				// TODO Auto-generated method stub
				// 得到文字，将其显示到TextView中
				m_TextView.setText("文本框中内容是：" + m_EditText.getText().toString());
			}
			
		});
	}
	
	/*
	 * 根据电话号码取得联系人姓名
	 */
	public void getPeople() {
		String[] projection = { ContactsContract.PhoneLookup.DISPLAY_NAME,
								ContactsContract.CommonDataKinds.Phone.NUMBER};

		Log.d(TAG, "getPeople ---------");
		
		// 将自己添加到 msPeers 中
		Cursor cursor = this.getContentResolver().query(
				ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                projection,    // Which columns to return.
                ContactsContract.CommonDataKinds.Phone.NUMBER + " = '" + mNumber + "'", // WHERE clause.
                null,          // WHERE clause value substitution
                null);   // Sort order.

		if( cursor == null ) {
			Log.d(TAG, "getPeople null");
		    return;
		}
		Log.d(TAG, "getPeople cursor.getCount() = " + cursor.getCount());
		for( int i = 0; i < cursor.getCount(); i++ )
		{
			cursor.moveToPosition(i);
		    
			// 取得联系人名字
            int nameFieldColumnIndex = cursor.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME);   
            String name = cursor.getString(nameFieldColumnIndex);
	        Log.i("Contacts", "" + name + " .... " + nameFieldColumnIndex); // 这里提示 force close
	        m_TextView.setText("联系人姓名：" + name);
		}
	}
	
}

 

原文链接：http://blog.csdn.net/ameyume/archive/2010/12/11/6068983.aspx