您可以自定義EDITTEXT像這些 並在你的XML代碼中使用這些
// XML代碼
<com.example.lineedittextdemo.LineEditText
android:id="@+id/edit_notepad"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@null"
android:inputType="textMultiLine|textNoSuggestions"
android:minLines="10"
android:singleLine="false"
android:imeOptions="actionNone"
/>
// Java代碼
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.FILL_AND_STROKE);
mPaint.setColor(Color.parseColor("#C0C0C0")); //SET YOUR OWN COLOR HERE
}
@Override
protected void onDraw(Canvas canvas) {
//int count = getLineCount();
int height = getHeight();
int line_height = getLineHeight();
int count = height/line_height;
if (getLineCount() > count)
count = getLineCount();//for long text with scrolling
Rect r = mRect;
Paint paint = mPaint;
int baseline = getLineBounds(0, r);//first line
for (int i = 0; i < count; i++) {
canvas.drawLine(r.left, baseline + 1, r.right, baseline + 1, paint);
baseline += getLineHeight();//next line
}
super.onDraw(canvas);
}
}
這項工作很好。但有一個問題。當minLines設置爲10時,它只顯示5行和5行超過提示文本,並在那裏顯示空白空間 –