android自訂控制項

標籤：span   listener   listen   log   resources   false   ack   pack   sources   

package com.example.app.sw.kg;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Paint;import android.util.AttributeSet;import android.view.View;import android.view.View.OnClickListener;import android.widget.Toast;public class MySwitchBtnView extends View implements OnClickListener{        private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);    private boolean flag = false ;    private Context mContext ;        Bitmap bitmap_open = null ;    Bitmap bitmap_close = null;    public MySwitchBtnView(Context context, AttributeSet attrs) {        super(context, attrs);        mContext = context;        init();    }    private void init() {        setOnClickListener(this);        bitmap_open = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.btn_open);        bitmap_close = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.btn_close);            }        @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        setMeasuredDimension(bitmap_open.getWidth(), bitmap_close.getHeight());    }        public MySwitchBtnView(Context context) {        super(context);        mContext = context ;        init();    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        if(flag){            //繪製開            canvas.drawBitmap(bitmap_open, 0, 0,paint);            Toast.makeText(mContext, "被開啟了", 0).show();        }else{            //繪製關            canvas.drawBitmap(bitmap_close, 0, 0,paint);            Toast.makeText(mContext, "被關閉了", 0).show();        }    }    @Override    public void onClick(View v) {        if(flag){            flag = false ;        }else{            flag = true ;        }        invalidate(); //重新整理螢幕    }}

 

android自訂控制項