Android實現自定義滑動式抽屜效果菜單

在Andoird使用Android自帶的那些組件，像SlidingDrawer和DrawerLayout都是抽屜效果的菜單，但是在項目很多要實現的功能都收到Android這些自帶組件的限制，導致很難完成項目的需求，自定義的組件，各方面都在自己的控制之下，從而根據需求做出調整。想要實現好的效果，基本上都的基於Android的OnTouch事件自己實現響應的功能。
首先，給大家先看一下整體的效果：

滑動的加速度效果都是有的，具體的體驗，只能安裝後才能查看。
接下來，看代碼：
代碼從MainActivity延伸出了2個類：MainController和MainView，MainController來處理控制層、MainView來操作展示層。
主要代碼：
MainActivity的代碼：

package com.example.wz;

import com.example.wz.controller.MainController;
import com.example.wz.util.MyLog;
import com.example.wz.view.MainView;

import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;

public class MainActivity extends Activity {

 public MyLog log = new MyLog(this, true);

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  log.e("歡迎你加入測試項目.");
  link();
 }

 public MainController mainController;
 public MainView mainView;

 private void link() {
  this.mainController = new MainController(this);
  this.mainView = new MainView(this);

  this.mainController.thisView = this.mainView;
  this.mainView.thisController = this.mainController;

  this.mainView.initViews();
 }

 @Override
 public boolean onTouchEvent(MotionEvent event) {
  super.onTouchEvent(event);
  return mainController.onTouchEvent(event);
 }
}

MainController的代碼：

package com.example.wz.controller;

import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;

import com.example.wz.MainActivity;
import com.example.wz.util.MyLog;
import com.example.wz.util.OpenLooper;
import com.example.wz.util.OpenLooper.LoopCallback;
import com.example.wz.view.MainView;

public class MainController {

 public MyLog log = new MyLog(this, true);

 public MainActivity mainActivity;
 public MainController thisController;
 public MainView thisView;

 public GestureDetector mGesture;

 public MainController(MainActivity mainActivity) {
  this.mainActivity = mainActivity;
  this.thisController = this;

  mGesture = new GestureDetector(mainActivity, new GestureListener());
  openLooper = new OpenLooper();
  openLooper.createOpenLooper();
  loopCallback = new ListLoopCallback(openLooper);
  openLooper.loopCallback = loopCallback;
 }

 public class TouchStatus {
  public int None = 4, Down = 1, Horizontal = 2, Vertical = 3, Up = 4;// LongPress = 5
  public int state = None;
 }

 public TouchStatus touchStatus = new TouchStatus();

 public class BodyStatus {
  public int Fixed = 0, Dragging = 1, Homing = 2, FlingHoming = 3, BoundaryHoming = 4;
  public int state = Fixed;
 }

 public BodyStatus bodyStatus = new BodyStatus();

 public class DrawStatus {
  public int Closed = 0, Open = 1, GoClosing = 2, GoOpening = 3;
  public int state = Closed;
 }

 public DrawStatus drawStatus = new DrawStatus();

 public class AreaStatus {
  public int A = 0, B = 1;
  public int state = A;
 }

 public AreaStatus areaStatus = new AreaStatus();

 public float touch_pre_x;
 public float touch_pre_y;

 public float currentTranslateX;

 public boolean onTouchEvent(MotionEvent event) {
  int action = event.getAction();

  float x = event.getX();
  float y = event.getY();

  if (action == MotionEvent.ACTION_DOWN) {
   this.touch_pre_x = x;
   this.touch_pre_y = y;

   if (touchStatus.state == touchStatus.None) {
    touchStatus.state = touchStatus.Down;
    log.e("Down ");
    if (x > thisView.maxTranslateX) {
     areaStatus.state = areaStatus.B;
    } else if (x <= thisView.maxTranslateX) {
     areaStatus.state = areaStatus.A;
    }
   }
  } else if (action == MotionEvent.ACTION_MOVE) {
   float Δy = (y - touch_pre_y);
   float Δx = (x - touch_pre_x);
   if (touchStatus.state == touchStatus.Down) {
    if (Δx * Δx + Δy * Δy > 400) {
     if (Δx * Δx > Δy * Δy) {
      touchStatus.state = touchStatus.Horizontal;
     } else {
      touchStatus.state = touchStatus.Vertical;
     }
     touch_pre_x = x;
     touch_pre_y = y;
     log.e("ACTION_MOVE ");
    }
   } else if (touchStatus.state == touchStatus.Horizontal) {
    currentTranslateX += Δx;
    this.touch_pre_x = x;
    this.touch_pre_y = y;
    if (currentTranslateX - thisView.maxTranslateX <= 0 && currentTranslateX >= 0) {
     setPosition();
    }
    log.e("Horizontal");
    bodyStatus.state = bodyStatus.Dragging;
   } else if (touchStatus.state == touchStatus.Vertical) {
    log.e("Vertical");
    bodyStatus.state = bodyStatus.Dragging;
   }
  } else if (action == MotionEvent.ACTION_UP) {
   log.e("ACTION_UP");
   if (bodyStatus.state == bodyStatus.Dragging) {
    if (touchStatus.state == touchStatus.Horizontal) {
     bodyStatus.state = bodyStatus.Homing;
     openLooper.start();
    } else if (touchStatus.state == touchStatus.Vertical) {
     if (drawStatus.state == drawStatus.Open && areaStatus.state == areaStatus.B) {
      bodyStatus.state = bodyStatus.Homing;
      drawStatus.state = drawStatus.GoClosing;
      openLooper.start();
     }
    }
   } else if (touchStatus.state == touchStatus.Down && areaStatus.state == areaStatus.B) {
    bodyStatus.state = bodyStatus.Homing;
    drawStatus.state = drawStatus.GoClosing;
    openLooper.start();
   }
   touchStatus.state = touchStatus.Up;
  }
  mGesture.onTouchEvent(event);
  return true;
 }

 class GestureListener extends SimpleOnGestureListener {

  @Override
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
   if (velocityX * velocityX + velocityY * velocityY > 250000) {
    if (velocityX * velocityX > velocityY * velocityY) {
     log.e("velocityX--" + velocityX);
     if (drawStatus.state == drawStatus.Closed && velocityX < 0) {
     } else if (drawStatus.state == drawStatus.Open && velocityX > 0) {
     } else {
      dxSpeed = velocityX;
      bodyStatus.state = bodyStatus.FlingHoming;
      openLooper.start();
     }
    } else {
     log.e("velocityY");
    }
   }
   return true;
  }

  public void onLongPress(MotionEvent event) {
  }

  public boolean onDoubleTap(MotionEvent event) {
   return false;
  }

  public boolean onDoubleTapEvent(MotionEvent event) {
   return false;
  }

  public boolean onSingleTapUp(MotionEvent event) {
   return false;
  }

  @Override
  public boolean onSingleTapConfirmed(MotionEvent event) {
   return false;
  }

  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
   return false;
  }
 }

 public void setPosition() {
  thisView.v1.setTranslationX(currentTranslateX - thisView.maxTranslateX);
  thisView.v2.setTranslationX(Math.abs(currentTranslateX));
 }

 float transleteSpeed = 3f;
 OpenLooper openLooper = null;
 LoopCallback loopCallback = null;

 public class ListLoopCallback extends LoopCallback {
  public ListLoopCallback(OpenLooper openLooper) {
   openLooper.super();
  }

  @Override
  public void loop(double ellapsedMillis) {
   if (bodyStatus.state == bodyStatus.Homing) {
    hommingView((float) ellapsedMillis);
   } else if (bodyStatus.state == bodyStatus.FlingHoming) {
    flingHomingView((float) ellapsedMillis);
   }
  }
 }

 public float ratio = 0.0008f;

 public void flingHomingView(float ellapsedMillis) {
  float distance = (float) ellapsedMillis * transleteSpeed;
  boolean isStop = false;
  if (drawStatus.state == drawStatus.Closed) {
   drawStatus.state = drawStatus.GoOpening;
  } else if (drawStatus.state == drawStatus.Open) {
   drawStatus.state = drawStatus.GoClosing;
  }
  if (drawStatus.state == drawStatus.GoClosing) {
   this.currentTranslateX -= distance;
   if (this.currentTranslateX <= 0) {
    this.currentTranslateX = 0;
    drawStatus.state = drawStatus.Closed;
    isStop = true;
    log.e("-------------1");
   }
  } else if (drawStatus.state == drawStatus.GoOpening) {
   this.currentTranslateX += distance;
   if (this.currentTranslateX >= thisView.maxTranslateX) {
    this.currentTranslateX = thisView.maxTranslateX;
    drawStatus.state = drawStatus.Open;
    isStop = true;
    log.e("-------------2");
   }
  }
  setPosition();
  if (isStop) {
   openLooper.stop();
  }
 }

 public float dxSpeed;

 public void dampenSpeed(long deltaMillis) {

  if (this.dxSpeed != 0.0f) {
   this.dxSpeed *= (1.0f - 0.002f * deltaMillis);
   if (Math.abs(this.dxSpeed) < 50f)
    this.dxSpeed = 0.0f;
  }
 }

 public void hommingView(float ellapsedMillis) {
  float distance = (float) ellapsedMillis * transleteSpeed;
  boolean isStop = false;
  if (drawStatus.state == drawStatus.Closed && this.currentTranslateX < thisView.maxTranslateX / 5) {
   this.currentTranslateX -= distance;
   if (this.currentTranslateX <= 0) {
    this.currentTranslateX = 0;
    drawStatus.state = drawStatus.Closed;
    isStop = true;
   }
  } else if (drawStatus.state == drawStatus.Closed && this.currentTranslateX >= thisView.maxTranslateX / 5) {
   this.currentTranslateX += distance;
   if (this.currentTranslateX >= thisView.maxTranslateX) {
    this.currentTranslateX = thisView.maxTranslateX;
    drawStatus.state = drawStatus.Open;
    isStop = true;
   }
  } else if (drawStatus.state == drawStatus.Open && this.currentTranslateX < thisView.maxTranslateX / 5 * 4) {
   this.currentTranslateX -= distance;
   if (this.currentTranslateX <= 0) {
    this.currentTranslateX = 0;
    drawStatus.state = drawStatus.Closed;
    isStop = true;
   }
  } else if (drawStatus.state == drawStatus.Open && this.currentTranslateX >= thisView.maxTranslateX / 5 * 4) {
   this.currentTranslateX += distance;
   if (this.currentTranslateX >= thisView.maxTranslateX) {
    this.currentTranslateX = thisView.maxTranslateX;
    drawStatus.state = drawStatus.Open;
    isStop = true;
   }
  } else if (drawStatus.state == drawStatus.GoClosing) {
   this.currentTranslateX -= distance;
   if (this.currentTranslateX <= 0) {
    this.currentTranslateX = 0;
    drawStatus.state = drawStatus.Closed;
    isStop = true;
   }
  }
  setPosition();
  if (isStop) {
   openLooper.stop();
   log.e("looper stop...");
  }
 }

}

MainView的代碼：

package com.example.wz.view;

import android.graphics.Color;
import android.util.DisplayMetrics;
import android.view.ViewGroup.LayoutParams;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.example.wz.MainActivity;
import com.example.wz.R;
import com.example.wz.controller.MainController;
import com.example.wz.util.MyLog;

public class MainView {

 public MyLog log = new MyLog(this, true);

 public MainActivity mainActivity;
 public MainController thisController;
 public MainView thisView;

 public MainView(MainActivity mainActivity) {
  this.mainActivity = mainActivity;
  this.thisView = this;
 }

 public DisplayMetrics displayMetrics;

 public float screenWidth;
 public float screenHeight;
 public float density;

 public float maxTranslateX;

 public RelativeLayout maxView;
 public RelativeLayout v1;
 public RelativeLayout v2;

 public void initViews() {
  this.displayMetrics = new DisplayMetrics();
  this.mainActivity.getWindowManager().getDefaultDisplay().getMetrics(this.displayMetrics);
  this.screenHeight = this.displayMetrics.heightPixels;
  this.screenWidth = this.displayMetrics.widthPixels;
  this.density = this.displayMetrics.density;
  this.maxTranslateX = this.screenWidth * 0.8f;
  this.mainActivity.setContentView(R.layout.activity_main);
  this.maxView = (RelativeLayout) this.mainActivity.findViewById(R.id.maxView);
  v1 = new RelativeLayout(mainActivity);
  v1.setBackgroundColor(Color.RED);
  RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams((int) this.maxTranslateX, LayoutParams.MATCH_PARENT);
  this.maxView.addView(v1, params1);
  TextView t1 = new TextView(mainActivity);
  t1.setText("left menu bar");
  t1.setTextColor(Color.WHITE);
  v1.addView(t1);
  v1.setTranslationX(0 - this.maxTranslateX);
  v2 = new RelativeLayout(mainActivity);
  v2.setBackgroundColor(Color.parseColor("#0099cd"));
  RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams((int) this.screenWidth, LayoutParams.MATCH_PARENT);
  this.maxView.addView(v2, params2);
  v2.setTranslationX(0);
  TextView t2 = new TextView(mainActivity);
  t2.setText("body content");
  t2.setTextColor(Color.WHITE);
  v2.addView(t2);
 }
}

日志管理類MyLog:

package com.example.wz.util;

import android.util.Log;

public class MyLog {

 public static boolean isGlobalTurnOn = true;

 public boolean isTurnOn = true;
 public String tag = null;

 public MyLog(String tag, boolean isTurnOn) {
  this.tag = tag;
  this.isTurnOn = isTurnOn;
 }

 public MyLog(Object clazz, boolean isTurnOn) {
  this.tag = clazz.getClass().getSimpleName();
  this.isTurnOn = isTurnOn;
 }

 public void v(String message) {
  this.v(this.tag, message);
 }

 public void d(String message) {
  this.d(this.tag, message);
 }

 public void i(String message) {
  this.i(this.tag, message);
 }

 public void w(String message) {
  this.w(this.tag, message);
 }

 public void e(String message) {
  this.e(this.tag, message);
 }

 public void v(String tag, String message) {
  if (isTurnOn && isGlobalTurnOn) {
   Log.v(tag, message);
  }
 }

 public void d(String tag, String message) {
  if (isTurnOn && isGlobalTurnOn) {
   Log.d(tag, message);
  }
 }

 public void i(String tag, String message) {
  if (isTurnOn && isGlobalTurnOn) {
   Log.i(tag, message);
  }
 }

 public void w(String tag, String message) {
  if (isTurnOn && isGlobalTurnOn) {
   Log.w(tag, message);
  }
 }

 public void e(String tag, String message) {
  if (isTurnOn && isGlobalTurnOn) {
   Log.e(tag, message);
  }
 }

}

實現動畫效果的核心類OpenLooper：

package com.example.wz.util;

import android.annotation.TargetApi;
import android.os.Build;
import android.os.Handler;
import android.os.SystemClock;
import android.view.Choreographer;

public class OpenLooper {

 public LegacyAndroidSpringLooper legacyAndroidSpringLooper = null;
 public ChoreographerAndroidSpringLooper choreographerAndroidSpringLooper = null;
 public LoopCallback loopCallback = null;

 public void createOpenLooper() {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
   choreographerAndroidSpringLooper = new ChoreographerAndroidSpringLooper();
  } else {
   legacyAndroidSpringLooper = new LegacyAndroidSpringLooper();
  }
 }

 public void start() {
  if (choreographerAndroidSpringLooper != null) {
   choreographerAndroidSpringLooper.start();
  } else if (legacyAndroidSpringLooper != null) {
   legacyAndroidSpringLooper.start();
  }
 }

 public void stop() {
  if (choreographerAndroidSpringLooper != null) {
   choreographerAndroidSpringLooper.stop();
  } else if (legacyAndroidSpringLooper != null) {
   legacyAndroidSpringLooper.stop();
  }
 }

 public class LoopCallback {

  public void loop(double ellapsedMillis) {

  }
 }

 public void loop(double ellapsedMillis) {
  if (this.loopCallback != null) {
   this.loopCallback.loop(ellapsedMillis);
  }
 }

 public class LegacyAndroidSpringLooper {

  public Handler mHandler;
  public Runnable mLooperRunnable;
  public boolean mStarted;
  public long mLastTime;

  public LegacyAndroidSpringLooper() {
   initialize(new Handler());
  }

  public void initialize(Handler handler) {
   mHandler = handler;
   mLooperRunnable = new Runnable() {
    @Override
    public void run() {
     if (!mStarted) {
      return;
     }
     long currentTime = SystemClock.uptimeMillis();
     loop(currentTime - mLastTime);
     mHandler.post(mLooperRunnable);
    }
   };
  }

  public void start() {
   if (mStarted) {
    return;
   }
   mStarted = true;
   mLastTime = SystemClock.uptimeMillis();
   mHandler.removeCallbacks(mLooperRunnable);
   mHandler.post(mLooperRunnable);
  }

  public void stop() {
   mStarted = false;
   mHandler.removeCallbacks(mLooperRunnable);
  }
 }

 @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 public class ChoreographerAndroidSpringLooper {

  public Choreographer mChoreographer;
  public Choreographer.FrameCallback mFrameCallback;
  public boolean mStarted;
  public long mLastTime;

  public ChoreographerAndroidSpringLooper() {
   initialize(Choreographer.getInstance());
  }

  public void initialize(Choreographer choreographer) {
   mChoreographer = choreographer;
   mFrameCallback = new Choreographer.FrameCallback() {
    @Override
    public void doFrame(long frameTimeNanos) {
     if (!mStarted) {
      return;
     }
     long currentTime = SystemClock.uptimeMillis();
     loop(currentTime - mLastTime);
     mLastTime = currentTime;
     mChoreographer.postFrameCallback(mFrameCallback);
    }
   };
  }

  public void start() {
   if (mStarted) {
    return;
   }
   mStarted = true;
   mLastTime = SystemClock.uptimeMillis();
   mChoreographer.removeFrameCallback(mFrameCallback);
   mChoreographer.postFrameCallback(mFrameCallback);
  }

  public void stop() {
   mStarted = false;
   mChoreographer.removeFrameCallback(mFrameCallback);
  }
 }
}

轉載來自：http://blog.csdn.net/qxs965266509

源碼下載：抽屜效果

以上就是本文的全部內容，希望對大家的學習有所幫助。