andriod 动态设置TextView 和 RelativeLayou 高度

 XML布局
             <RelativeLayout
                 android:id="@+id/rlay_meeting_contact_context"
                 android:layout_width="match_parent"
                 android:layout_height="44dp"
                 android:clickable="false"
                 android:focusable="false" >

                 <TextView
                     android:id="@+id/tv_test"
                     style="@style/B4_Font_white"
                     android:layout_width="match_parent"
                     android:layout_height="match_parent"
                     android:layout_alignParentTop="true"
                     android:layout_toRightOf="@+id/TextView07"
                     android:duplicateParentState="true"
                     android:gravity="left|center"
                     android:singleLine="true"
                     android:text="@string/accept_invite_this_troop" />

             </RelativeLayout>

注：android:gravity="left|center"//表示文本从左的中间开始，不然展开后文本会在中显开始显示

JAVA

定义：

private int mContextHeght = 0;
private Boolean mLookContextflag = false;

private RelativeLayout mrlayMeetingContactContext;
mrlayMeetingContactContext = (RelativeLayout) findViewById(R.id.rlay_meeting_contact_context);

 private TextView  mtvTest;

 mtvTest= (TextView) findViewById(R.id.tv_test);

利用timer计时器获取：LineCount

注：getLineCount注意：需要待对象展开后才能正确获取，不然获取到的是0

     TimerTask task = new TimerTask() {
         public void run() {
             Message message = new Message();
             message.what = 1;
             handler.sendMessage(message);
         }
     };

     final Handler handler = new Handler() {
         public void handleMessage(Message msg) {
             switch (msg.what) {
             case 1:
                 android.util.Log.e("Timer", "Timer");
                  update();
                 break;
             }
             super.handleMessage(msg);
         }

     };

     private void update() {
         int linecount = mtvTest.getLineCount();

         Log.i("tv.getLineCount()", mtvTest.getHeight() + "");
         if ((!mLookContextflag) || (linecount < 2)) {

             mLookContextflag = true;
             mtvTest.setEllipsize(null); // 展开
             mtvTest.setSingleLine(false);
         } else if ((mLookContextflag) || (linecount > 1)) {
             mLookContextflag = false;
             if (mtvTestt.getLineCount() > 1) {
                 int iHeght = mtvTest.getLineCount()
                         * mtvTest.getLineHeight();

                 if (iHeght > mContextHeght) {
                     android.view.ViewGroup.LayoutParams pp = mrlayMeetingContactContext
                             .getLayoutParams();
                     pp.height = iHeght;
                     mrlayMeetingContactContext.setLayoutParams(pp);
                     mMeetingContactContext.setHeight(iHeght);
                     //timer用完结束掉
                     if (mTimer != null) {
                         mTimer.cancel();
                         mTimer = null;
                     }
                 }

             }

         }

调用：

     @Override
     public void onClick(View v) {
         // TODO Auto-generated method stub
         switch (v.getId()) {
         case R.id.meeting_contact_context:
             if (mContextHeght == 0) {
                 mContextHeght = mrlayMeetingContactContext.getHeight();
                 if (mTimer == null) {
                     mTimer = new Timer(false);
                     mTimer.schedule(task, 10, 100);
                 }
             }
 }