在Android的触摸滑轮上查看翻转？ [英] Touch Scroll on View Flipper in Android?

问题描述

我要实现的触摸滑轮上的ViewFlipper。例如。我有两个图像。起初，ViewFlipper显示的第一个图像。现在我扔从右到左的观点。第一个图像视图滑出左，第二张幻灯片从左侧。我可以实现它通过这种帖子。但我想滚动的图像。也就是说，在ACTION_MOVE事件我想要做的触摸滚动。例如，当我移动触摸从右到左将甩到多大的触摸动作。在该时间，输出应该部分地显示两个图像。

如何做到这一点？我必须测量屏幕水平（高度和放大器;宽度）。例如：codeS是更有帮助。

解决方案

 包com.appaapps.flipper;

进口android.app.Activity;
进口android.content.Context;
进口android.graphics *。
进口android.os.Bundle;
进口android.view.MotionEvent;
进口android.view.View;
进口android.widget.ViewFlipper;
// ------------------------------------------------ ------------------------------
//翻转 - 菲利普 -  [R布伦南在gmail.com
// ------------------------------------------------ ------------------------------
公共类FlipperActivity延伸活动{
    ViewFlipper F;
    drawView函数A，B，C;
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        F =新ViewFlipper（本）;
        A =新的drawView函数（这一点，AAAAA）;
        B =新drawView函数（这一点，BBBBB）;
        C =新drawView函数（这一点，CCCCC）;
        f.addView（一）;
        f.addView（B）;
        f.addView（C）;
        的setContentView（F）;
    }
    // ------------------------------------------------ ------------------------------
    // 绘制
    // ------------------------------------------------ ------------------------------
    一流的drawView函数扩展视图实现View.OnTouchListener {
        最后文本字符串;
        drawView函数（上下文的背景下，文本字符串）{
            超（上下文）;
            文本=文本;
            setOnTouchListener（本）;
        }
        公共无效的OnDraw（帆布油画）{
            super.onDraw（画布）;
            涂料P =新的油漆（）;
            p.setColor（为0xffffffff）;
            p.setTextSize（20）;
            Canvas.drawText（文字，0，20，p）的;
        }
        公共布尔onTouch（视图V，MotionEvent事件）{
            最终诠释一个= event.getAction（）;
            若（a == MotionEvent.ACTION_DOWN）{
                最终诠释我= f.getDisplayedChild（），N = f.getChildCount（）;
                f.setDisplayedChild（（1 + 1）％N）;
            }
            返回true;
        }
    }
}
 

I have to achieve that the Touch Scroll on the ViewFlipper. For Example. I have two Images. At First, ViewFlipper shows an First Image. Now I Flung the view from right to left. The First Image view Slide out left and the Second Slide in from Left. I can achieve it By this Post. But I want to Scroll the image. That is, on the Action_Move Event I want to do Touch Scroll. For Example, when I move the touch from right to left it will flung how much the touch moves. on that time the output should show both images partly.

How to do that? What I have to measure the Screen levels(height & width). Example codes are more helpful.

解决方案

package com.appaapps.flipper;

import android.app.Activity;
import android.content.Context;
import android.graphics.*;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ViewFlipper;
//------------------------------------------------------------------------------
// Flipper - Philip R Brenan at gmail.com
//------------------------------------------------------------------------------
public class FlipperActivity extends Activity {
    ViewFlipper f;
    DrawView a, b, c;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        f = new ViewFlipper(this);
        a = new DrawView(this, "aaaaa");
        b = new DrawView(this, "BBBBB");
        c = new DrawView(this, "ccccc");
        f.addView(a);
        f.addView(b);
        f.addView(c);
        setContentView(f);
    }
    //------------------------------------------------------------------------------
    // Draw 
    //------------------------------------------------------------------------------
    class DrawView extends View implements View.OnTouchListener {
        final String text;
        DrawView(Context Context, String Text) {
            super(Context);
            text = Text;
            setOnTouchListener(this);
        }
        public void onDraw(Canvas Canvas) {
            super.onDraw(Canvas);
            Paint p = new Paint();
            p.setColor(0xffffffff);
            p.setTextSize(20);
            Canvas.drawText(text, 0, 20, p);
        }
        public boolean onTouch(View v, MotionEvent event) {
            final int a = event.getAction();
            if (a == MotionEvent.ACTION_DOWN) {
                final int i = f.getDisplayedChild(), n = f.getChildCount();
                f.setDisplayedChild((i + 1) % n);
            }
            return true;
        }
    }
}

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