[英]Android: Ruled/horizontal lines in Textview
In Android, I have a TextView and its content will be dynamic. 在Android中,我有一个TextView,它的内容是动态的。 I want to show a horizontal line after each line of text.
我想在每行文本之后显示一条水平线。 I have searched a lot and found it for EditText( How to use ruled/horizontal lines to align text in EditText in Android? ).
我已经搜索了很多东西,并找到了EditText( 如何在Android中的EditText中使用格线/水平线对齐文本? )。 I was planing to draw dynamic TextView and a horizontal line under them.
我打算在其下绘制动态TextView和一条水平线。 But I don't know how can I detect an end of line.
但是我不知道如何检测行尾。 Any help will be highly appreciated.
任何帮助将不胜感激。 I want to have the same effect as the attached image of How to use ruled/horizontal lines to align text in EditText in Android?
我希望具有与如何在Android中的EditText中使用格线/水平线对齐文本的图像相同的效果?
I'm using the technique of drawing lines between each line of text in EditText and then I will make the EditText non-editable by setting setKeyListener(null) to the custom EditText object so that, the EditText acts like a TextView :) 我正在使用在EditText中的每一行文本之间绘制线条的技术,然后通过将setKeyListener(null)设置为自定义EditText对象来使EditText不可编辑,从而使EditText就像TextView一样 :)
public class LinedEditText extends EditText {
private Rect mRect;
private Paint mPaint;
// we need this constructor for LayoutInflater
public LinedEditText(Context context, AttributeSet attrs) {
super(context, attrs);
mRect = new Rect();
mPaint = new Paint();
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setColor(0x800000FF);
}
@Override
protected void onDraw(Canvas canvas) {
int count = getLineCount();
Rect r = mRect;
Paint paint = mPaint;
for (int i = 0; i < count; i++) {
int baseline = getLineBounds(i, r);
canvas.drawLine(r.left, baseline + 1, r.right, baseline + 1, paint);
}
super.onDraw(canvas);
}
}
Now use object of LinedEditText class where you need your TextView and make it non-editable. 现在在需要TextView并使它不可编辑的地方使用LinedEditText类的对象。
public class HorizontalLine extends Activity{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("Android: Ruled/horizonal lines in Textview");
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
LayoutParams textViewLayoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
LinedEditText et = new LinedEditText(this, null);
et.setText("The name of our country is Bangladesh. I am proud of my country :)");
et.setLayoutParams(textViewLayoutParams);
et.setKeyListener(null);
ll.addView(et);
this.setContentView(ll);
}
}
et.setKeyListener(null) makes the EditText non-editable so, it acts like a TextView. et.setKeyListener(null)使EditText不可编辑,因此它就像TextView。
If you use et.setKeyListener(null) only then it is just not listening to keys but user can see a cursor on the EditText. 如果仅使用et.setKeyListener(null),则它只是不侦听键,而是用户可以在EditText上看到光标。 If you don't want this cursor just disable the EditText by adding this line:
如果您不希望该光标通过添加以下行来禁用EditText:
et.setEnabled(false);
You can use a View for drawing line: For horizontal line: 您可以使用视图来绘制线条:对于水平线:
<View
android:layout_height="1dp"
android:layout_width="fill_parent"
android:background="#ffffff" />
<TextView
android:layout_height="1dp"
android:layout_width="fill_parent"/>
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