I m 使用“强” EditText

A custom EditText that draws lines between each line of text that is displayed:

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);
    }
} 

现在使用 < strong> LinedEditText 类对象, 您需要您的 < strong > TextView 对象, 使其无法编辑 。

An Example:

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) 使得编辑文本无法编辑,因此,它就像文本视图。

The Output:

""https://i.sstatic.net/5G300.png" alt="此处输入图像描述"/"

Issue with cursor:

If you use et.setKeyListener(null) only then it is just not listening to keys but user can see a cursor on the EditText. If you don t want this cursor just disable the EditText by adding this line:

 et.setEnabled(false);

我不知道你为什么想要在文本视图中插入一条线。 如果您想要绘制一条水平单行, 请在您正在读取的 db 的文本视图之间设置这个代码, 显然在您的布局 xml 文件 :

在相关的java代码中调整以 Java 编码进行分离:

View horizontalLine = (View)findViewById(R.id.horizontalLine);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(left, top, right, bottom);
horizontalLine.setLayoutParams(lp);

左、上、右、底参数是必须改变的参数。