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private void computeCoordinates() {  BigStone stone;  BigStone menus;  for (int index = 0; index < STONE_COUNT; index ) {   stone = mStones[index];   stone.x = mPointX      (float) (mRadius * Math.cos(stone.angle * Math.PI / 180));   stone.y = mPointY      (float) (mRadius * Math.sin(stone.angle * Math.PI / 180));  }  if (flag == 0) {   for (int i = 0; i < MENUS; i ) {     menus = mMenus[i];     switch (i) {    case 0:     menus.x = 300 * 1.8f;     menus.y = 50;     break;    case 1:     menus.x = 300 * 1.8f 100;     menus.y = 50;     break;    case 2:     menus.x = 300 * 1.8f 200;     menus.y = 50;     break;    case 3:     menus.x = 300 * 1.8f;     menus.y = 150;     break;    case 4:     menus.x = 300 * 1.8f 10 100;     menus.y = 250;     break;     }    }  } }

android 广播和通知 实例源码

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一款还不错的静态壁纸代码 核心代码：package com.example.wallpaperchange;import android.os.Bundle;import android.app.Activity;import android.app.AlarmManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast; public class MainActivity extends Activity { AlarmManager aManager; Button start,stop; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); start = (Button)findViewById(R.id.start); stop = (Button)findViewById(R.id.stop); aManager = (AlarmManager)getSystemService(Service.ALARM_SERVICE); //指定ChangeService组件 Intent intent = new Intent(MainActivity.this,ChangeService.class); //创建PendingIntent对象 final PendingIntent pi = PendingIntent.getService( MainActivity.this, 0, intent, 0); start.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub aManager.setRepeating(AlarmManager.RTC_WAKEUP, 0, 5000, pi); start.setEnabled(false); stop.setEnabled(true); Toast.makeText(MainActivity.this, "壁纸定时更换启动成功", 5000).show(); } }); stop.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub start.setEnabled(true); stop.setEnabled(false); aManager.cancel(pi); } }); } }

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