textview set maxline = 10 ,11 line how update On the screen

Question

    sv = (ScrollView) findViewById(R.id.sv);// sv == tv parent view
    tv = (TextView) findViewById(R.id.tv);
    tv.setMaxLines(10);
    for(int i=0;i<10;i++)
    {
        String t1 = "---------------------"+i+"--------------- \n";
        tv.append(t1);
    }
    tv.append("dddddddddddddddddd \n");// 11 line

this is game chat panel ,when chat info excessive ,Whether can delete old lines ,Such as lines > 500 delete 1-200 line or delete 1 line update new 501 line ?

score 0 · Accepted Answer · answered Nov 27 '13 at 14:06

0

You can add scroll inside of textView with:

android:scrollbars="vertical"

or You can delete first line with this before adding 11th line according to your code:

String arr[] = myTextView.getText().toString().split("\n",2);
myTextView.setText(arr[1]);

answered Nov 27 '13 at 14:06

invisbo

3,399
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lines Exceed 300 Low efficiency! – user3039984 Nov 27 '13 at 14:29

score 0 · Answer 2 · edited May 23 '17 at 12:27

0

Instead of a huge TextView, consider using a ListView with a circular buffer adapter that caps the number of rows (messages) efficiently and enables smooth scrolling.

edited May 23 '17 at 12:27

Community

1
1

answered Mar 17 '14 at 12:40

laalto

150,114
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textview set maxline = 10 ,11 line how update On the screen

2 Answers2