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); } } }