右侧MENU划屏代码

tihi

2013-12-19

参考http://my.eoe.cn/1188496/archive/20296.html

MainActivity

package com.nico;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnPreDrawListener;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;

public class MainActivity extends Activity implements
		GestureDetector.OnGestureListener, OnTouchListener {

	public LinearLayout leftview = null;
	public LinearLayout rightview = null;
	public ImageView setBtn = null;
	public GestureDetector gestureD = null;
	public int window_width;
	public int max_width;
	public boolean isScroll = false;
	public int mScrollX = 0;
	public ImageView img = null;
	final public static int SPEED = 30;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_main);
		initView();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@SuppressWarnings("deprecation")
	public void initView() {
		leftview = (LinearLayout) findViewById(R.id.left_part);
		rightview = (LinearLayout) findViewById(R.id.right_part);
		setBtn = (ImageView) findViewById(R.id.set_btn);
		img = (ImageView) findViewById(R.id.bg);
		gestureD = new GestureDetector(this);
		leftview.setOnTouchListener(this);
		img.setOnTouchListener(this);
		gestureD.setIsLongpressEnabled(false);
		getmaxWidth();
	}

	@Override
	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {
		return false;
	}

	@Override
	public void onLongPress(MotionEvent e) {

	}

	@Override
	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
			float distanceY) {
		//拖动过程中
		isScroll = true;
		//distanceX是处理后点X跟前点X的距离，此时mScrollX为X方向移动距离
		mScrollX += distanceX;
		
		RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) leftview
				.getLayoutParams();
		int leftmargin = params.leftMargin;
		//左边距 - X方向移动的距离 等于新的左边距
		leftmargin -= mScrollX;

		//到头了，停止移动，设定左边距为-max_width 或 0
		if (leftmargin <= -max_width) {
			leftmargin = -max_width;
			params.leftMargin = leftmargin;
			isScroll = false;
		} else if (leftmargin >= 0) {
			leftmargin = 0;
			params.leftMargin = leftmargin;
			isScroll = false;
		}
		//其他范围内，正常设定左边距
		params.leftMargin = leftmargin;
		leftview.setLayoutParams(params);
		//返回false,继续传递这个事件
		return false;
	}

	@Override
	public void onShowPress(MotionEvent e) {

	}

	@Override
	public boolean onSingleTapUp(MotionEvent e) {
		//单击的时候实现左右移动
		isScroll = false;
		RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) leftview
				.getLayoutParams();
		int leftmargin = params.leftMargin;
		if (leftmargin == 0) {
			new MoveAsyTask(leftview, max_width).execute(-SPEED);
		} else {
			new MoveAsyTask(leftview, max_width).execute(SPEED);
		}

		return false;
	}

	@Override
	public boolean onDown(MotionEvent e) {
		//按下第一个动作时，mScrollX置为0，isScroll重置为false
		mScrollX = 0;
		isScroll = false;
		return true;
	}

	public boolean hasMeasured = false;

	void getmaxWidth() {
		ViewTreeObserver viewTreeObserver = leftview.getViewTreeObserver();
		// 获取控件宽度
		viewTreeObserver.addOnPreDrawListener(new OnPreDrawListener() {
			@Override
			public boolean onPreDraw() {
				if (!hasMeasured) {
					window_width = getWindowManager().getDefaultDisplay()
							.getWidth();
					RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) leftview
							.getLayoutParams();
					layoutParams.width = window_width;
					leftview.setLayoutParams(layoutParams);
					max_width = rightview.getWidth();
					hasMeasured = true;
				}
				return true;
			}
		});

	}

	@Override
	public boolean onTouch(View v, MotionEvent event) {
		if (MotionEvent.ACTION_UP == event.getAction() && isScroll == true) {
			RelativeLayout.LayoutParams params = (LayoutParams) leftview
					.getLayoutParams();
			int leftmargin = params.leftMargin;
			
			//滑动结束后，判断拖动距离是否大于一般屏宽，是则向前，否则缩回去
			if (leftmargin < -window_width / 2) {
				new MoveAsyTask(leftview, max_width).execute(-SPEED);
			} else {
				new MoveAsyTask(leftview, max_width).execute(SPEED);
			}
		}
		return gestureD.onTouchEvent(event);
	}
}

划屏任务

package com.nico;

import android.os.AsyncTask;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

public class MoveAsyTask extends AsyncTask<Integer, Integer, String> {
	public LinearLayout view;

	public int max_width;

	public MoveAsyTask(LinearLayout v, int mw) {
		view = v;
		max_width = mw;
	}

	@Override
	protected void onProgressUpdate(Integer... values) {
		RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) view
				.getLayoutParams();
		//更新视图
		int leftmargin = params.leftMargin;
		int guide = values[0];
		if (guide > 0) {
			// 往右
			leftmargin = Math.min(leftmargin + guide, 0);
		} else {
			leftmargin = Math.max(leftmargin + guide, -max_width);
			// 往左
		}
		params.leftMargin = leftmargin;
		view.setLayoutParams(params);
	}

	@Override
	protected String doInBackground(Integer... params) {

		int times = 0;
		if (max_width % Math.abs(params[0]) == 0)// 整除
			times = max_width / Math.abs(params[0]);
		else
			times = max_width / Math.abs(params[0]) + 1;// 有余数

		for (int i = 0; i < times; i++) {
			publishProgress(params[0]);
			try {
				Thread.sleep(Math.abs(params[0]));
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}

		return null;
	}
}

XML文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:id="@+id/right_part"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginLeft="50dp"
        android:background="@android:color/background_dark"
        android:orientation="vertical" >

        <LinearLayout
            android:id="@+id/right_title"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="center" >

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="设置"
                android:textColor="@android:color/white"
                android:textSize="20sp" />
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/left_part"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <RelativeLayout
            android:id="@+id/left_title"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/nav_bg" >

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:text="我"
                android:textColor="@android:color/white"
                android:textSize="20sp" />

            <ImageView
                android:id="@+id/set_btn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:src="@drawable/set_btn" />
        </RelativeLayout>

        <ImageView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:id="@+id/bg"
            android:background="@drawable/guide_bg" />
    </LinearLayout>

</RelativeLayout>

android