Andriod dynamically sets TextView and RelativeLayou height, andriodtextview

Andriod dynamically sets TextView and RelativeLayou height, andriodtextview

1 XML layout 2 <RelativeLayout 3 android: id = "@ + id/rlay_meeting_contact_context" 4 android: layout_width = "match_parent" 5 android: layout_height = "44dp" 6 android: clickable = "false" 7 android: focusable = "false"> 8 9 <TextView10 android: id = "@ + id/TV _test" 11> 12 android: layout_width = "match_parent" 13 android: layout_height = "match_parent" 14 android: layout_alignParentTop = "true" 15 android: layout_toRightOf = "@ + id/TextView07" 16 android: duplicateParentState = "true" 17 android: gravity = "left | center" 18 android: singleLine = "true" 19 android: text = "@ string/accept_invite_this_troop"/> 20 21 </RelativeLayout>

Note: android: gravity = "left | center" // indicates that the text starts from the middle of the left. Otherwise, the text is displayed in the center after being expanded.

JAVA

Definition:

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

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

 

1 private TextView  mtvTest;2 3 mtvTest= (TextView) findViewById(R.id.tv_test);

 

Obtain the LineCount using the timer.

Note: getLineCount must be expanded before it can be obtained correctly. Otherwise, it is 0.

 

1 TimerTask task = new TimerTask () {2 public void run () {3 Message message = new Message (); 4 message. what = 1; 5 handler. sendMessage (message); 6} 7}; 8 9 final Handler handler = new Handler () {10 public void handleMessage (Message msg) {11 switch (msg. what) {12 case :13 android. util. log. e ("Timer", "Timer"); 14 update (); 15 break; 16} 17 super. handleMessage (msg); 18} 19 20}; 21 22 private void upda Te () {23 int linecount = mtvTest. getLineCount (); 24 25 Log. I ("TV. getLineCount () ", mtvTest. getHeight () + ""); 26 if ((! MLookContextflag) | (linecount <2) {27 28 mLookContextflag = true; 29 mtvTest. setEllipsize (null); // expand 30 mtvTest. setSingleLine (false); 31} else if (mLookContextflag) | (linecount> 1) {32 mLookContextflag = false; 33 if (mtvTestt. getLineCount ()> 1) {34 int iHeght = mtvTest. getLineCount () 35 * mtvTest. getLineHeight (); 36 37 if (iHeght> mContextHeght) {38 android. view. viewGroup. layoutParams pp = MrlayMeetingContactContext39. getLayoutParams (); 40 pp. height = iHeght; 41 mrlayMeetingContactContext. setLayoutParams (pp); 42 mMeetingContactContext. setHeight (iHeght); 43 // when timer is used up, it stops 44 if (mTimer! = Null) {45 mTimer. cancel (); 46 mTimer = null; 47} 48} 49 50} 51 52}

 

Call:

 1     @Override 2     public void onClick(View v) { 3         // TODO Auto-generated method stub 4         switch (v.getId()) { 5         case R.id.meeting_contact_context: 6             if (mContextHeght == 0) { 7                 mContextHeght = mrlayMeetingContactContext.getHeight(); 8                 if (mTimer == null) { 9                     mTimer = new Timer(false);10                     mTimer.schedule(task, 10, 100);11                 }12             }13 }