android 超简单的拖动按钮 悬浮按钮 吸附按钮 浮动按钮

2022-07-09 16:06:03

第一种

android 超简单的拖动按钮 悬浮按钮 吸附按钮 浮动按钮  android 超简单的拖动按钮 悬浮按钮 吸附按钮 浮动按钮

第二种

android 超简单的拖动按钮 悬浮按钮 吸附按钮 浮动按钮  android 超简单的拖动按钮 悬浮按钮 吸附按钮 浮动按钮

第一种实现方法

xml布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <Button

        android:id="@+id/startBtn"

        android:layout_width="35dp"

        android:layout_height="35dp"

        android:layout_centerInParent="true"

        android:background="@drawable/addstock" />

</RelativeLayout>

Activity调用

		DisplayMetrics dm = getResources().getDisplayMetrics();

		screenWidth = dm.widthPixels;

		screenHeight = dm.heightPixels;

		// Toast.makeText(getActivity(), screenWidth + "==" + screenHeight + "="

		// + vHeight, 0).show();

		// 拖动的按钮

		btn = (Button) view.findViewById(R.id.startBtn);

		btn.setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View v) {

				// TODO Auto-generated method stub

				if (bool) {

					LatestNetDataPackage lnPackage = new LatestNetDataPackage(R.string.COMMAND_LATESTNET, fundKind, sortType,

							requestType, curPage, FUND_COUNT, 0);

					dataPackage = lnPackage;

					NetWorkTaskManager.addRequestToRequestCache(lnPackage, HListViewFragment.this, HListViewFragment.this,

							getActivity());

					btn.setBackgroundResource(R.drawable.deletestock);

					bool = false;

				} else {

					LatestNetDataPackage lnPackage = new LatestNetDataPackage(R.string.COMMAND_LATESTNET, fundKind, sortType,

							requestType, curPage, FUND_COUNT, 1);

					dataPackage = lnPackage;

					NetWorkTaskManager.addRequestToRequestCache(lnPackage, HListViewFragment.this, HListViewFragment.this,

							getActivity());

					btn.setBackgroundResource(R.drawable.addstock);

					bool = true;

				}

			}

		});

		btn.setOnTouchListener(new OnTouchListener() {

			int lastX, lastY; // 记录移动的最后的位置

			private int btnHeight;

			public boolean onTouch(View v, MotionEvent event) {

				// 获取Action

				int ea = event.getAction();

				switch (ea) {

				case MotionEvent.ACTION_DOWN: // 按下

					lastX = (int) event.getRawX();

					lastY = (int) event.getRawY();

					screenWidth = view.getWidth();

					screenHeight = view.getHeight();

					btnHeight = btn.getHeight();

					// Toast.makeText(getActivity(), "ACTION_DOWN：" + lastX + ",

					// " + lastY, 0).show();

					break;

				case MotionEvent.ACTION_MOVE: // 移动

					// 移动中动态设置位置

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

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

					int left = v.getLeft() + dx;

					int top = v.getTop() + dy;

					int right = v.getRight() + dx;

					int bottom = v.getBottom() + dy;

					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);

					// Toast.makeText(getActivity(), "position：" + left + ", " +

					// top + ", " + right + ", " + bottom, 0)

					// .show();

					// 将当前的位置再次设置

					lastX = (int) event.getRawX();

					lastY = (int) event.getRawY();

					break;

				case MotionEvent.ACTION_UP: // 抬起

					// 向四周吸附

//					int dx1 = (int) event.getRawX() - lastX;

//					int dy1 = (int) event.getRawY() - lastY;

//					int left1 = v.getLeft() + dx1;

//					int top1 = v.getTop() + dy1;

//					int right1 = v.getRight() + dx1;

//					int bottom1 = v.getBottom() + dy1;

//					if (left1 < (screenWidth / 2)) {

//						if (top1 < 100) {

//							v.layout(left1, 0, right1, btnHeight);

//						} else if (bottom1 > (screenHeight - 200)) {

//							v.layout(left1, (screenHeight - btnHeight), right1, screenHeight);

//						} else {

//							v.layout(0, top1, btnHeight, bottom1);

//						}

//					} else {

//						if (top1 < 100) {

//							v.layout(left1, 0, right1, btnHeight);

//						} else if (bottom1 > (screenHeight - 200)) {

//							v.layout(left1, (screenHeight - btnHeight), right1, screenHeight);

//						} else {

//							v.layout((screenWidth - btnHeight), top1, screenWidth, bottom1);

//						}

//					}

//					break;

				}

				return false;

			}

		});

view指的是布局

第二种实现方法

xml布局

<com.ui.view.DragFrameLayout

        android:id="@+id/becausefloat"

        android:layout_width="fill_parent"

        android:layout_height="0.0dp"

        android:layout_gravity="center_vertical"

        android:layout_weight="1" >

        <FrameLayout

            android:id="@+id/container"

            android:layout_width="match_parent"

            android:layout_height="0dp"

            android:layout_weight="1" />

        <ImageView

            android:id="@+id/dragImg"

            android:layout_width="35dp"

            android:layout_height="35dp"

            android:background="@drawable/deletestock" />

    </com.ui.view.DragFrameLayout>

自定义控件 com.ui.view.DragFrameLayout

package com.ui.view;

import com.ui.R;

import android.content.Context;

import android.graphics.Rect;

import android.location.Location;

import android.util.AttributeSet;

import android.util.Log;

import android.view.MotionEvent;

import android.view.View;

import android.view.ViewConfiguration;

import android.widget.FrameLayout;

public class DragFrameLayout extends FrameLayout {

	private View view;

	private int width, heigh;

	private int screenWid, screenHei;

	private boolean isClickDrag = false;

	private boolean isTouchDrag = false;

	private float startX, startY;

	private CheckClick checkClick = new CheckClick();

	private DragImageClickListener dragImageListener;

	public DragImageClickListener getDragImageListener() {

		return dragImageListener;

	}

	public void setDragImageListener(DragImageClickListener dragImageListener) {

		this.dragImageListener = dragImageListener;

	}

	public interface DragImageClickListener {

		public abstract void onClick();

	}

	private class CheckClick implements Runnable {

		@Override

		public void run() {

			// TODO Auto-generated method stub

			isClickDrag = false;

			Log.i("drag", "=====checkTap====");

		}

	}

	public DragFrameLayout(Context context, AttributeSet attrs, int defStyle) {

		super(context, attrs, defStyle);

		// TODO Auto-generated constructor stub

	}

	public DragFrameLayout(Context context, AttributeSet attrs) {

		super(context, attrs);

		// TODO Auto-generated constructor stub

	}

	public void dragInit(View view) {

		screenWid = getWidth();

		screenHei = getHeight();

		width = view.getWidth();

		heigh = view.getHeight();

	}

	@Override

	public boolean onInterceptTouchEvent(MotionEvent ev) {

		// TODO Auto-generated method stub

		switch (ev.getAction()) {

		case MotionEvent.ACTION_DOWN:

			float x = ev.getX();

			float y = ev.getY();

			Rect frame = new Rect();

			if (view == null) {

				view = findViewById(R.id.dragImg);

				dragInit(view);

			}

			view.getHitRect(frame);

			if (frame.contains((int) (x), (int) (y))) {

				isTouchDrag = true;

				startX = x;

				startY = y;

				return true;

			}

			break;

		}

		return false;

	}

	@Override

	protected void onLayout(boolean changed, int left, int top, int right,

			int bottom) {

		super.onLayout(changed, left, top, right, bottom);

	}

	@Override

	public boolean onTouchEvent(MotionEvent event) {

		// TODO Auto-generated method stub

		float x = event.getX();

		float y = event.getY();

		Rect frame = new Rect();

		switch (event.getAction()) {

		case MotionEvent.ACTION_DOWN:

			view.getHitRect(frame);

			if (frame.contains((int) (x), (int) (y))) {

				startX = x;

				startY = y;

				isTouchDrag = true;

				isClickDrag = true;

				postDelayed(checkClick, ViewConfiguration.getTapTimeout());

			}

			break;

		case MotionEvent.ACTION_MOVE:

			float distanX = Math.abs(x - startX);

			float distanY = Math.abs(y - startY);

			if (Math.sqrt(distanY * distanY + distanX * distanX) > 10) {

				isClickDrag = false;

			}

			move(x, y);

			break;

		case MotionEvent.ACTION_CANCEL:

			isClickDrag = false;

			isTouchDrag = false;

			break;

		case MotionEvent.ACTION_UP:

			if (isClickDrag == true) {

				dragImageListener.onClick();

				removeCallbacks(checkClick);

			}

			isClickDrag = false;

			isTouchDrag = false;

			// 这段是把控件吸附四周

//			if (x > width && x < screenWid - width && y > heigh

//					&& y < screenHei -  heigh) {

//				int minType = minDIstance(x, y);

//				Log.i("tags", screenHei + "==mintype=" + minType);

//				switch (minType) {

//				case LEFT:

//					x = width;

//					break;

//				case RIGHT:

//					x = screenWid - width;

//					break;

//				case TOP:

//					y = heigh;

//					break;

//				case BOTTOM:

//					y = screenHei - heigh;

//					break;

//				default:

//					break;

//				}

//				move(x, y);

//			}

			break;

		case MotionEvent.ACTION_OUTSIDE:

			isClickDrag = false;

			isTouchDrag = false;

			break;

		}

		return true;

	}

	private final static int LEFT = 1;

	private final static int RIGHT = 2;

	private final static int TOP = 3;

	private final static int BOTTOM = 4;

	private int minDIstance(float x, float y) {

		Log.i("tags", "x=" + x + "==y=" + y);

		boolean left, top;

		if (x <= (screenWid - x)) {

			left = true;

		} else {

			left = false;

		}

		if (y <= (screenHei - y)) {

			top = true;

		} else {

			top = false;

		}

		if(left&&top){

			if(x<=y){

				return LEFT;

			}else{

				return TOP;

			}

		}

		if(left&&(!top)){

			if(x<=(screenHei-y)){

				return LEFT;

			}else{

				return BOTTOM;

			}

		}

		if((!left)&top){

			if((screenWid-x)<= y){

				return RIGHT;

			}else{

				return TOP;

			}

		}

		if((!left)&(!top)){

			if((screenWid-x)<= (screenHei-y)){

				return RIGHT;

			}else{

				return BOTTOM;

			}

		}

		return 0;

	}

	private void move(float x, float y) {

		int left = (int) (x - width / 2);

		int top = (int) (y - heigh / 2);

		if (left <= 0)

			left = 0;

		if (top <= 0)

			top = 0;

		if (left > screenWid - width)

			left = screenWid - width;

		if (top > screenHei - heigh)

			top = screenHei - heigh;

		FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) view

				.getLayoutParams();

		params.setMargins(left, top, (screenWid - left - width), (screenHei

				- top - heigh));

		view.setLayoutParams(params);

		requestLayout();

	}

	public double getDistance(double lat1, double lon1, double lat2, double lon2) {

		float[] results = new float[1];

		Location.distanceBetween(lat1, lon1, lat2, lon2, results);

		return results[0];

	}

}

Activity调用方法

dragImg = (ImageView)findViewById(R.id.dragImg);

		frameLayout = (DragFrameLayout)findViewById(R.id.becausefloat);

		frameLayout.setDragImageListener(new DragImageClickListener() {

			private boolean isDaix;

			@Override

			public void onClick() {

				// TODO Auto-generated method stub

				if (isDaix) {

					dragImg.setBackgroundResource(R.drawable.deletestock);

					isDaix = false;

				} else {

					dragImg.setBackgroundResource(R.drawable.addstock);

					isDaix = true;

				}

				Toast.makeText(MainActivity.this, "点击",

						Toast.LENGTH_LONG).show();

			}

		});
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