1 package com.lixu.drawable; 2 3 import android.app.Activity; 4 import android.os.Bundle; 5 import android.view.Window; 6 import android.view.WindowManager; 7 import untils.Untils; 8 9 public class MainActivity extends Activity {10 private Activity activity;11 12 @Override13 protected void onCreate(Bundle savedInstanceState) {14 super.onCreate(savedInstanceState);15 activity = this;16 // 设置全屏17 requestWindowFeature(Window.FEATURE_NO_TITLE);18 Untils.toggleFullscreen(activity, true);19 setContentView(R.layout.main);20 21 }22 23 }
1 package com.lixu.drawable; 2 3 import android.app.Activity; 4 import android.content.Intent; 5 import android.os.Bundle; 6 import android.support.v4.app.Fragment; 7 import android.support.v4.app.FragmentActivity; 8 import android.support.v4.app.FragmentManager; 9 import android.support.v4.app.FragmentPagerAdapter; 10 import android.support.v4.view.ViewPager; 11 import android.support.v4.view.ViewPager.OnPageChangeListener; 12 import android.view.LayoutInflater; 13 import android.view.View; 14 import android.view.View.OnClickListener; 15 import android.view.ViewGroup; 16 import android.view.Window; 17 import android.widget.Button; 18 import android.widget.ImageView; 19 import untils.Untils; 20 21 public class WelcomActivity extends FragmentActivity { 22 private Mydrawable mMydrawable; 23 private Activity activity; 24 25 private int[] images = { R.drawable.p1, R.drawable.p2, R.drawable.p3, R.drawable.p4, R.drawable.p5, 26 R.drawable.p6, }; 27 28 @SuppressWarnings("deprecation") 29 @Override 30 protected void onCreate(Bundle savedInstanceState) { 31 activity = this; 32 super.onCreate(savedInstanceState); 33 // 让程序全屏 34 requestWindowFeature(Window.FEATURE_NO_TITLE); 35 Untils.toggleFullscreen(activity, true); 36 37 setContentView(R.layout.activity_main); 38 39 mMydrawable = (Mydrawable) findViewById(R.id.mydrawable); 40 // 根据情况设置圆球数量 41 mMydrawable.setCount(images.length); 42 43 ViewPager vp = (ViewPager) findViewById(R.id.vp); 44 45 vp.setAdapter(new MyAdapter(this.getSupportFragmentManager())); 46 47 vp.setOnPageChangeListener(new OnPageChangeListener() { 48 // 设置页面滑动时改变红点的位置 49 @Override 50 public void onPageSelected(int pos) { 51 52 mMydrawable.choose(pos); 53 54 } 55 56 @Override 57 public void onPageScrolled(int arg0, float arg1, int arg2) { 58 59 } 60 61 @Override 62 public void onPageScrollStateChanged(int arg0) { 63 64 } 65 }); 66 67 } 68 69 private class MyAdapter extends FragmentPagerAdapter { 70 71 public MyAdapter(FragmentManager fm) { 72 super(fm); 73 } 74 75 @Override 76 public Fragment getItem(final int pos) { 77 78 Fragment f = new Fragment() { 79 @Override 80 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 81 82 if (pos == (getCount() - 1)) { 83 84 View view = inflater.inflate(R.layout.fragmentmain, null); 85 Button btn = (Button) view.findViewById(R.id.btn); 86 btn.setOnClickListener(new OnClickListener() { 87 88 @Override 89 public void onClick(View v) { 90 Intent intent = new Intent(activity, MainActivity.class); 91 startActivity(intent); 92 // 进入主程序关闭初始动画界面 93 activity.finish(); 94 } 95 }); 96 ImageView iv = (ImageView) view.findViewById(R.id.iv2); 97 iv.setImageResource(images[pos]); 98 return view; 99 100 } else {101 View view = inflater.inflate(R.layout.fragment, null);102 103 ImageView iv = (ImageView) view.findViewById(R.id.iv1);104 iv.setImageResource(images[pos]);105 106 return view;107 108 }109 }110 };111 112 return f;113 }114 115 @Override116 public int getCount() {117 return images.length;118 }119 120 }121 122 }
1 package com.lixu.drawable; 2 3 import android.content.Context; 4 import android.graphics.Canvas; 5 import android.graphics.Color; 6 import android.graphics.Paint; 7 import android.util.AttributeSet; 8 import android.util.Log; 9 import android.view.View;10 11 public class Mydrawable extends View {12 private int posfirst = 0;13 // 圆球的间距14 private int juli = 50;15 // 圆球的数量16 private int count = 0;17 18 // 设置圆球的半径19 private float radius = 10;20 21 // 用这个构造方法,用其他会报错22 public Mydrawable(Context context, AttributeSet attrs) {23 super(context, attrs);24 }25 26 // 根据情况设置圆球数量27 public void setCount(int a) {28 count = a;29 }30 31 public void choose(int pos) {32 posfirst = pos;33 // 执行这个方法 会重新绘图34 this.invalidate();35 }36 37 @Override38 protected void onDraw(Canvas canvas) {39 super.onDraw(canvas);40 41 Paint p = new Paint();42 // 去掉图形的锯齿，使得圆球更圆滑43 p.setAntiAlias(true);44 45 // 获取屏幕X Y坐标46 float w = getWidth();47 float h = getHeight();48 49 for (int i = 0; i < 6; i++) {50 if (i == posfirst) {51 52 p.setColor(Color.RED);53 // 画一个红色圆形54 canvas.drawCircle((w - (count - 1) * juli) / 2 + juli * i, (float) (h * 0.9), radius + 5, p);55 } else {56 57 p.setColor(Color.GRAY);58 // 画一个灰色圆形59 canvas.drawCircle((w - (count - 1) * juli) / 2 + juli * i, (float) (h * 0.9), radius, p);60 61 }62 63 }64 65 }66 67 }
工具类：
1 package untils; 2 3 import android.app.Activity; 4 import android.view.WindowManager; 5 6 public class Untils { 7 8 9 public static void toggleFullscreen(Activity activity,boolean fullScreen) {10 // fullScreen为true时全屏11 12 WindowManager.LayoutParams attrs = activity.getWindow().getAttributes();13 14 if (fullScreen) {15 attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;16 } else {17 attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;18 }19 20 activity.getWindow().setAttributes(attrs);21 }22 }
xml文件：
1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 tools:context="com.lixu.drawable.WelcomActivity" > 6 7 <com.lixu.drawable.Mydrawable 8 android:id="@+id/mydrawable" 9 android:layout_width="match_parent"10 android:layout_height="match_parent" />11 12 <android.support.v4.view.ViewPager13 android:id="@+id/vp"14 android:layout_width="match_parent"15 android:layout_height="match_parent" >16 </android.support.v4.view.ViewPager>17 18 </RelativeLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" > 6 7 <ImageView 8 android:id="@+id/iv1" 9 android:layout_width="match_parent"10 android:layout_height="match_parent" />11 12 </LinearLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:id="@+id/LinearLayout1" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent" 6 android:orientation="vertical" > 7 8 <ImageView 9 android:layout_weight="4"10 android:id="@+id/iv2"11 android:layout_width="match_parent"12 android:layout_height="match_parent" />13 14 <Button15 android:layout_weight="1"16 android:id="@+id/btn"17 android:layout_width="wrap_content"18 android:layout_height="wrap_content"19 android:layout_gravity="center"20 android:text="进入QQ音乐" />21 22 </LinearLayout>
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" > 6 7 <TextView 8 android:layout_width="match_parent" 9 android:layout_height="match_parent"10 android:text="我是主程序界面" 11 android:textSize="35sp"12 android:gravity="center"/>13 </LinearLayout>
运行效果图：
