安卓新手必备五个代码片段整理

拨打电话

public static void call(Context context, String phoneNumber) {     context.startActivity(new Intent(Intent.ACTION_CALL, Uri.parse('tel:' + phoneNumber)));}

跳转至拨号界面

public static void callDial(Context context, String phoneNumber) {     context.startActivity(new Intent(Intent.ACTION_DIAL, Uri.parse('tel:' + phoneNumber)));}

发送短信

public static void sendSms(Context context, String phoneNumber,        String content) {    Uri uri = Uri.parse('smsto:'            + (TextUtils.isEmpty(phoneNumber) ? '' : phoneNumber));    Intent intent = new Intent(Intent.ACTION_SENDTO, uri);    intent.putExtra('sms_body', TextUtils.isEmpty(content) ? '' : content);    context.startActivity(intent);}

唤醒屏幕并解锁

public static void wakeUpAndUnlock(Context context){    KeyguardManager km= (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);    KeyguardManager.KeyguardLock kl = km.newKeyguardLock('unLock');    //解锁    kl.disableKeyguard();    //获取电源管理器对象    PowerManager pm=(PowerManager) context.getSystemService(Context.POWER_SERVICE);    //获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK,'bright');    //点亮屏幕    wl.acquire();    //释放    wl.release();}

需要添加权限

<uses-permission android:name='android.permission.WAKE_LOCK' /><uses-permission android:name='android.permission.DISABLE_KEYGUARD' />    

来自：http://blog.csdn.net/zhaokaiqiang1992