微信小程序中页面之间传参实例详解

//index.wxml

<form bindsubmit="formSubmit"bindreset="formReset"class="myform">

 <text class="prompt">给自己起个名字吧</text>

 <input placeholder="给自己起个名字吧"name="uesrname"/>

 <!--<navigator url="../logs/logs?title=我是index">跳转到新页面</navigator>   之间传参-->

 <!--<navigator url="../logs/logs?title=我是index"redirect>在当前页打开</navigator>   -->

 <button form-type="submit"type="primary"size="mini">确定</button>

 <button form-type="reset"type="warn"size="mini">重置</button>

 </form>

formSubmit:function(e){

  varda = e.detail.value;

  varqu = da.uesrname;

  this.setData({

   username:qu

  }),

  wx.navigateTo({

   url:'../logs/logs?uesrname='+qu//qu是上面input输入的值

  })

 },

//logs.js

Page({

 data: {

  motto:'Hello',

  userInfo: {},

  answer: stringAns,

  uesrname:'' //设置一下接收的变量

 },

 onLoad:function(option) {

  this.setData({

   uesrname:option.uesrname

  })

 },

/**

 * 根据手指拖动的当前位置，自动贴边的View

 */

publicclassDragViewextendsImageViewimplementsView.OnTouchListener{

 privateintscreenWidth;

 privateintscreenHeight;

 privateContext mContext;

 privateintlastX, lastY;

 privateintleft ,top;

 privateViewGroup.MarginLayoutParams layoutParams;

 privateintstartX;

 privateintendX;

 privatebooleanisMoved =false;

 privateonDragViewClickListener mLister;

 publicinterfaceonDragViewClickListener{

  voidonDragViewClick();

 }

 publicvoidsetOnDragViewClickListener(onDragViewClickListener listener){

  this.mLister = listener;

 }

 publicDragView(Context context) {

  this(context,null);

 }

 publicDragView(Context context, AttributeSet attrs) {

  super(context, attrs);

  mContext = context;

  DisplayMetrics displayMetrics = getResources().getDisplayMetrics();

  screenWidth = displayMetrics.widthPixels;

  screenHeight = displayMetrics.heightPixels-getStatusBarHeight();

  init();

 }

 publicvoidinit(){

  setOnTouchListener(this);

  post(newRunnable() {

   @Override

   publicvoidrun() {

    layoutParams = (ViewGroup.MarginLayoutParams)getLayoutParams();

    layoutParams.topMargin = screenHeight - getHeight();

    layoutParams.leftMargin = screenWidth - getWidth();

    setLayoutParams(layoutParams);

   }

  });

 }

 @Override

 publicbooleanonTouch(View v, MotionEvent event) {

  switch(event.getAction()) {

   caseMotionEvent.ACTION_DOWN:

    lastX = (int) event.getRawX();

    lastY = (int) event.getRawY();

    startX = lastX;

    break;

   caseMotionEvent.ACTION_MOVE:

    isMoved =true;

    intdx = (int) event.getRawX() - lastX;

    intdy = (int) event.getRawY() - lastY;

    left = v.getLeft() + dx;

    top = v.getTop() + dy;

    intright = v.getRight() + dx;

    intbottom = v.getBottom() + dy;

    // 设置不能出界

    if(left <0) {

     left =0;

     right = left + v.getWidth();

    }

    if(right > screenWidth) {

     right = screenWidth;

     left = right - v.getWidth();

    }

    if(top <0) {

     top =0;

     bottom = top + v.getHeight();

    }

    if(bottom > screenHeight) {

     bottom = screenHeight;

     top = bottom - v.getHeight();

    }

    v.layout(left, top, right, bottom );

    lastX = (int) event.getRawX();

    lastY = (int) event.getRawY();

    break;

   caseMotionEvent.ACTION_UP:

    //只有滑动改变上边距时，抬起才进行设置

    if(isMoved) {

     layoutParams = (ViewGroup.MarginLayoutParams)getLayoutParams();

     layoutParams.topMargin = top;

     setLayoutParams(layoutParams);

    }

    endX = (int) event.getRawX();

    //滑动距离比较小，当作点击事件处理

    if(Math.abs(startX - endX) <6) {

     returnfalse;

    }

    if(left +v.getWidth()/2< screenWidth/2) {

     startScroll(left,screenWidth/2,true);

    }else{

     startScroll(left,screenWidth/2,false);

    }

    break;

  }

  returntrue;

}

 //在此处理点击事件

 @Override

 publicbooleanonTouchEvent(MotionEvent event) {

  mLister.onDragViewClick();

  returnsuper.onTouchEvent(event);

 }

 publicvoidstartScroll(finalintstart,intend,finalbooleanisLeft){

  ValueAnimator valueAnimator = ValueAnimator.ofFloat(start,end).setDuration(800);

  valueAnimator.addUpdateListener(newValueAnimator.AnimatorUpdateListener() {

   @Override

   publicvoidonAnimationUpdate(ValueAnimator animation) {

    if(isLeft) {

     layoutParams.leftMargin = (int) (start*(1-animation.getAnimatedFraction()));

    }else{

     layoutParams.leftMargin = (int) (start + (screenWidth - start - getWidth())*(animation.getAnimatedFraction()));

    }

    setLayoutParams(layoutParams);

   }

  });

  valueAnimator.start();

 }

 /**

  * 获取状态栏的高度

  * @return 状态栏高度

  */

 publicintgetStatusBarHeight() {

  intresult =0;

  intresourceId = getResources().getIdentifier("status_bar_height","dimen","android");

  if(resourceId >0) {

   result = getResources().getDimensionPixelSize(resourceId);

  }

  returnresult;

 }

}

publicstaticintcalculateVolume(byte[] var0,intvar1) {

    int[] var3 =null;

    intvar4 = var0.length;

    intvar2;

    if(var1 ==8) {

      var3 =newint[var4];

      for(var2 =0; var2 < var4; ++var2) {

        var3[var2] = var0[var2];

      }

    }elseif(var1 ==16) {

      var3 =newint[var4 /2];

      for(var2 =0; var2 < var4 /2; ++var2) {

        bytevar5 = var0[var2 *2];

        bytevar6 = var0[var2 *2+1];

        intvar13;

        if(var5<0) {

          var13 = var5 +256;

        }else{

          var13 = var5;

        }

        shortvar7 = (short)(var13 +0);

        if(var6<0) {

          var13 = var6 +256;

        }else{

          var13 = var6;

        }

        var3[var2] = (short)(var7 + (var13 <<8));

      }

    }

    int[] var8 = var3;

    if(var3 !=null&& var3.length !=0) {

      floatvar10 =0.0F;

      for(intvar11 =0; var11 < var8.length; ++var11) {

        var10 += (float)(var8[var11] * var8[var11]);

      }

      var10 /= (float)var8.length;

      floatvar12 =0.0F;

      for(var4 =0; var4 < var8.length; ++var4) {

        var12 += (float)var8[var4];

      }

      var12 /= (float)var8.length;

      var4 = (int)(Math.pow(2.0D, (double)(var1 -1)) -1.0D);

      doublevar14 = Math.sqrt((double)(var10 - var12 * var12));

      intvar9;

      if((var9 = (int)(10.0D * Math.log10(var14 *10.0D * Math.sqrt(2.0D) / (double)var4 +1.0D)))<0) {

        var9 =0;

      }

      if(var9 >10) {

        var9 =10;

      }

      returnvar9;

    }else{

      return0;

    }

}