Android(安卓)自绘输入框

android 可以任意继承控件而写出自定义的漂亮的控件来。要写自定义的可以需要继续android.widget.EditText，并且重写其它onDraw就可以得到自己的编辑框。

import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.WindowManager;import android.widget.EditText;public class TelEdit extends EditText{Context mContext;public TelEdit(Context context) {super(context);mContext = context;}public TelEdit(Context context, AttributeSet attrs) {super(context, attrs);mContext = context;}public TelEdit(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);mContext = context;}protected void onDraw(Canvas canvas){WindowManager wm = (WindowManager) mContext.getSystemService("window");int windowWidth = wm.getDefaultDisplay().getWidth();int windowHeight = wm.getDefaultDisplay().getHeight();Paint paint = new Paint();paint.setStyle(Paint.Style.FILL);paint.setColor(Color.BLACK);int paddingTop = getPaddingTop();int paddingBottom = getPaddingBottom(); int scrollY = getScrollY();int scrollX = getScrollX()+windowWidth;int innerHeight = scrollY + getHeight() - paddingTop - paddingBottom;int lineHeight = getLineHeight();int baseLine = scrollY + (lineHeight - (scrollY % lineHeight));int x = 8;while (baseLine < innerHeight) {//canvas.drawBitmap(line, x, baseLine + paddingTop, paint);canvas.drawLine(x, baseLine + paddingTop,scrollX, baseLine + paddingTop, paint);baseLine += lineHeight;}super.onDraw(canvas);}}

使用如下代码插入:

<com.xxx.tel.common.TelEdit android:text="@+id/EditText01" android:id="@+id/EditText01" android:layout_width="fill_parent" android:background="@drawable/xxxx"android:gravity="top"android:typeface="sans"android:capitalize="sentences"android:lineSpacingExtra="5dip"android:textSize="22dip"android:textColor="@color/wite"android:layout_height="300dip"></com.xxx.tel.common.TelEdit>

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