4.TableLayout、回调接口

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="vertical" >

<!--   android:shrinkColumns="0"  压缩第0列，当第0列的内容过多时，不至于将其他列的内容，挤出屏幕  -->

<TableLayout

android:id="@+id/tl_receive"

android:layout_width="match_parent"

android:shrinkColumns="0"

android:layout_height="wrap_content" >

<TableRow android:layout_height="wrap_content" >

<TextView

android:id="@+id/tv_msg_receive"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:background="@drawable/receive_msg_bubble"

android:text="asdfasdfasdfasdfasdfsdfadfadfasdfasfsdfadffad" />

<TextView

android:id="@+id/tv_date_receive"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:gravity="bottom"

android:text="2014/10/10" />

</TableRow>

</TableLayout>

<!--   android:shrinkColumns="1"  压缩第0列，当第0列的内容过多时，不至于将其他列的内容，挤出屏幕  -->

<TableLayout

android:id="@+id/tl_send"

android:layout_width="match_parent"

android:shrinkColumns="1"

android:layout_height="wrap_content" >

<TableRow android:layout_height="wrap_content" 

android:gravity="right">

<TextView

android:id="@+id/tv_date_send"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:gravity="bottom"

android:text="2014/10/10" />

<TextView

android:id="@+id/tv_msg_send"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:background="@drawable/send_msg_bubble"

android:text="sfsdfadadsadsfasdfadfffad" />

</TableRow>

</TableLayout>

<!-- 另一种实现 方式  -->

<!-- <LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="right"

>

<LinearLayout 

android:layout_width="wrap_content"

android:layout_height="wrap_content"

>

 <TextView

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:gravity="bottom"

android:text="2014/10/10" />

 <TextView

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="2"

android:background="@drawable/send_msg_bubble"

android:text="asdfdf" />

</LinearLayout>

</LinearLayout> -->

</LinearLayout>

public class ConversationDetail extends Activity implements OnClickListener{

/**

*联系人的电话号码

*/

private String address;

private Context ctx;

private ListView listView;

private EditText inputMsg;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

ctx = this;

address = getIntent().getStringExtra("address");

if(address == null){

throw new RuntimeException("联系人是空，我不知道显示哪个会话记录");

}

setContentView(R.layout.activity_conversation_detail);

init();

listView = (ListView) findViewById(R.id.lv_conversation_detail);

adapter = new MyListAdapter(this, null);

listView.setAdapter(adapter);

//设置listView条目之间的分隔线为null ，即，不要分隔线

listView.setDivider(null);

prepareData();

}

private void prepareData() {

public class MyQueryHandler extends AsyncQueryHandler{

public MyQueryHandler(ContentResolver cr) {

super(cr);

}

@Override

protected void onQueryComplete(int token, Object cookie, Cursor cursor) {

System.out.println("onQueryComplete : token:"+token);

System.out.println("onQueryComplete : cookie:"+cookie);

Tools.printCursor(cursor);

if(cookie!=null && cookie instanceof CursorAdapter){

CursorAdapter adapter = (CursorAdapter) cookie;

// 给adapter 设置新的cursor

adapter.changeCursor(cursor);

}

if(cursorChangedListener!=null){

cursorChangedListener.onCursorChanged(token, cookie, cursor);

}

}

public IOnCursorChangedListener getCursorChangedListener() {

return cursorChangedListener;

}

public void setOnCursorChangedListener(IOnCursorChangedListener cursorChangedListener) {

this.cursorChangedListener = cursorChangedListener;

}

private IOnCursorChangedListener cursorChangedListener;

/**

 * 声明，cursor改变时的监听接口

 * @author Administrator

 *

*/

public interface IOnCursorChangedListener{

void onCursorChanged(int token, Object cookie, Cursor cursor);

}

}

MyQueryHandler myQueryHandler = new MyQueryHandler(getContentResolver());

myQueryHandler.setOnCursorChangedListener(new MyQueryHandler.IOnCursorChangedListener() {

@Override

/**

 *  当adapter 获得 cursor 的时候，回调此方法 

*/

public void onCursorChanged(int token, Object cookie, Cursor cursor) {

// 让listview 显示最后一行

listView.setSelection(adapter.getCount()-1);

}

});

myQueryHandler.startQuery(99, adapter, MyConstants.URI_SMS, projection, " address="+address, null, " date ");

}

/**

 * 显示会话详情，所需要的列

*/

private String[] projection={

"_id","body","date","type"

};

/**

 * 短信内容所在列的索引值  为 1

*/

private final int INDEX_BODY = 1;

private final int INDEX_DATE = 2;

private final int INDEX_TYPE = 3;

private void init() {

TextView title = (TextView) findViewById(R.id.tv_title_conversation_detail);

String name = Tools.findNameByNumber(ctx, address);

if(name !=null){ // 有此联系人

title.setText(name);

}else{ // 无此联系人

title.setText(address);

}

findViewById(R.id.btn_back).setOnClickListener(this);

findViewById(R.id.btn_ok).setOnClickListener(this);

inputMsg = (EditText) findViewById(R.id.et_input_msg_conversation_detail);

}

@Override

/**

 * 响应按钮的点击事件

*/

public void onClick(View v) {

switch (v.getId()) {

case R.id.btn_back: // 后退按钮

finish();

break;

case R.id.btn_ok: // 确定按钮

//先判断输入的是否有内容，

//如果有内容的话，就将内容以短信的形式发送出去，

String msg = inputMsg.getText().toString();

if(TextUtils.isEmpty(msg.trim())){

Toast.makeText(ctx, "请输入短信内容", 0).show();

return ;

}

// 发送短信

Tools.sendMessage(ctx,msg,address);

//清空输入框

inputMsg.setText("");

// 隐藏输入法键盘

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

// 隐藏输入法的 API 

imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);

break;

}

}

private MyListAdapter adapter;

private class MyListAdapter extends CursorAdapter{

public MyListAdapter(Context context, Cursor c) {

super(context, c);

}

@Override

/**

 * 当内容发生改变的时候，回调此方法

*/

protected void onContentChanged() {

// super 里面，做了重新查询的动作

super.onContentChanged();

// 让listView 显示最后一行

listView.setSelection(getCount()-1);

}

@Override

public View newView(Context context, Cursor cursor, ViewGroup parent) {

View view =View.inflate(ctx, R.layout.list_item_conversation_detail, null);

ViewHolder vh = new ViewHolder();

vh.tlReceive = (TableLayout) view.findViewById(R.id.tl_receive);

vh.msgReceive = (TextView) view.findViewById(R.id.tv_msg_receive);

vh.dateReceive = (TextView) view.findViewById(R.id.tv_date_receive);

vh.tlSend = (TableLayout) view.findViewById(R.id.tl_send);

vh.msgSend = (TextView) view.findViewById(R.id.tv_msg_send);

vh.dateSend = (TextView) view.findViewById(R.id.tv_date_send);

view.setTag(vh);

return view;

}

@Override

public void bindView(View view, Context context, Cursor cursor) {

ViewHolder vh = (ViewHolder) view.getTag();

// 给listView条目设置内容

int type = cursor.getInt(INDEX_TYPE);// 获得短信类型

String text = cursor.getString(INDEX_BODY);//获得短信内容

long when = cursor.getLong(INDEX_DATE);// 获得日期

String dateStr = DateFormat.getDateFormat(ctx).format(when);

if(type == MyConstants.TYPE_RECEIVE){ // 接收到的短信

vh.tlReceive.setVisibility(View.VISIBLE);

vh.tlSend.setVisibility(View.GONE);

//设置短信内容

vh.msgReceive.setText(text);

//设置日期

vh.dateReceive.setText(dateStr);

}else{

vh.tlReceive.setVisibility(View.GONE);

vh.tlSend.setVisibility(View.VISIBLE);

//设置短信内容

vh.msgSend.setText(text);

vh.dateSend.setText(dateStr);

}

}

}

private class ViewHolder {

public TableLayout tlReceive;

public TextView msgReceive;

public TextView dateReceive;

public TableLayout tlSend;

public TextView msgSend;

public TextView dateSend;

}

}