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app/src/main/AndroidManifest.xml

@@ -2,13 +2,15 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="me.happy.demo">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".LockScreenActivity">
+        <activity android:name=".WaveActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/me/happy/demo/WaveActivity.java

@@ -0,0 +1,36 @@
+package me.happy.demo;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+
+import me.happy.demo.view.wave.WaveView3;
+
+public class WaveActivity extends AppCompatActivity {
+
+    private ImageView imageView;
+    private WaveView3 waveView3;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_wave);
+        imageView = (ImageView) findViewById(R.id.image);
+        waveView3 = (WaveView3) findViewById(R.id.wave_view);
+
+        final FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(-2,-2);
+        lp.gravity = Gravity.BOTTOM|Gravity.CENTER;
+        waveView3.setOnWaveAnimationListener(new WaveView3.OnWaveAnimationListener() {
+            @Override
+            public void OnWaveAnimation(float y) {
+                lp.setMargins(0,0,0,(int)y+2);
+                imageView.setLayoutParams(lp);
+            }
+        });
+    }
+}

app/src/main/java/me/happy/demo/view/wave/WaveView3.java

@@ -0,0 +1,99 @@
+package me.happy.demo.view.wave;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.DrawFilter;
+import android.graphics.Paint;
+import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.Path;
+import android.util.AttributeSet;
+import android.view.View;
+
+/**
+ * Created by Administrator on 2016/11/30.
+ */
+
+public class WaveView3 extends View {
+
+    private Path  mAbovePath,mBelowWavePath;
+    private Paint mAboveWavePaint,mBelowWavePaint;
+
+    private DrawFilter mDrawFilter;
+
+    private float φ;
+
+    private OnWaveAnimationListener mWaveAnimationListener;
+
+    public WaveView3(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        //初始化路径
+        mAbovePath = new Path();
+        mBelowWavePath = new Path();
+        //初始化画笔
+        mAboveWavePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mAboveWavePaint.setAntiAlias(true);
+        mAboveWavePaint.setStyle(Paint.Style.FILL);
+        mAboveWavePaint.setColor(Color.WHITE);
+
+        mBelowWavePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        mBelowWavePaint.setAntiAlias(true);
+        mBelowWavePaint.setStyle(Paint.Style.FILL);
+        mBelowWavePaint.setColor(Color.WHITE);
+        mBelowWavePaint.setAlpha(80);
+        //画布抗锯齿
+        mDrawFilter = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+
+        canvas.setDrawFilter(mDrawFilter);
+
+        mAbovePath.reset();
+        mBelowWavePath.reset();
+
+        φ-=0.1f;
+
+        float y,y2;
+
+        double ω = 2*Math.PI / getWidth();
+
+        mAbovePath.moveTo(getLeft(),getBottom());
+        mBelowWavePath.moveTo(getLeft(),getBottom());
+        for (float x = 0; x <= getWidth(); x += 20) {
+            /**
+             *  y=Asin(ωx+φ)+k
+             *  A—振幅越大，波形在y轴上最大与最小值的差值越大
+             *  ω—角速度， 控制正弦周期(单位角度内震动的次数)
+             *  φ—初相，反映在坐标系上则为图像的左右移动。这里通过不断改变φ,达到波浪移动效果
+             *  k—偏距，反映在坐标系上则为图像的上移或下移。
+             */
+            y = (float) (8 * Math.cos(ω * x + φ) +8);
+            y2 = (float) (8 * Math.sin(ω * x + φ));
+            mAbovePath.lineTo(x, y);
+            mBelowWavePath.lineTo(x, y2);
+            //回调 把y坐标的值传出去(在activity里面接收让小机器人随波浪一起摇摆)
+            mWaveAnimationListener.OnWaveAnimation(y);
+        }
+        mAbovePath.lineTo(getRight(),getBottom());
+        mBelowWavePath.lineTo(getRight(),getBottom());
+
+        canvas.drawPath(mAbovePath,mAboveWavePaint);
+        canvas.drawPath(mBelowWavePath,mBelowWavePaint);
+
+        postInvalidateDelayed(20);
+
+    }
+
+    public void setOnWaveAnimationListener(OnWaveAnimationListener l){
+        this.mWaveAnimationListener = l;
+    }
+
+    public interface OnWaveAnimationListener{
+        void OnWaveAnimation(float y);
+    }
+
+}
+
+

app/src/main/res/layout/activity_wave.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#ffffff"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="200dp"
+        android:background="#FF3366">
+
+        <me.happy.demo.view.wave.WaveView3
+            android:id="@+id/wave_view"
+            android:layout_width="match_parent"
+            android:layout_height="15dp"
+            android:layout_gravity="bottom" />
+
+        <ImageView
+            android:id="@+id/image"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|center"
+            android:background="@mipmap/ic_launcher" />
+
+    </FrameLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:orientation="vertical">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="其他内容"
+            android:textSize="24sp" />
+
+    </LinearLayout>
+
+</LinearLayout>