发送，取消notification，打开，关闭闪光灯。

Notification d的应用

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.pm.FeatureInfo;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.example.dugaolong.wiewone.MainActivity;
import com.example.dugaolong.wiewone.R;

/**
 * Created by dugaolong on 16/7/5.
 */
public class MyNotification extends Activity implements View.OnClickListener {

    NotificationManager manager;
    int noti_id = 111;
    int index = 0;
    private Camera camera;
    private boolean isopent = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.notification_layout);
        manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        Button bt_send = (Button) findViewById(R.id.send);
        Button bt_cancel = (Button) findViewById(R.id.cancel);
        Button bt_light = (Button) findViewById(R.id.light);
        bt_send.setOnClickListener(this);
        bt_cancel.setOnClickListener(this);
        bt_light.setOnClickListener(this);

    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.send:
                sendNotification();
                break;
            case R.id.cancel:
                manager.cancelAll();
                break;
            case R.id.light:
                flshLight();
                break;
        }
    }

    private void flshLight() {
        int ii = 0;
        PackageManager pm = this.getPackageManager();
        FeatureInfo[] features = pm.getSystemAvailableFeatures();
        for (FeatureInfo f : features) {
            if (PackageManager.FEATURE_CAMERA_FLASH.equals(f.name))   //判断设备是否支持闪光灯
            {
                ii = 1;
                Log.v("dgl", "支持闪光灯");
            }
        }
        Camera.Parameters parameter;
        if (ii == 1) {
            if (!isopent) {
                Toast.makeText(getApplicationContext(), "您已经打开了手电筒", 0)
                        .show();
                camera = Camera.open();
                Camera.Parameters params = camera.getParameters();
                params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                camera.setParameters(params);
                camera.startPreview(); // 开始亮灯

                isopent = true;
            } else {
                Toast.makeText(getApplicationContext(), "关闭了手电筒",
                        Toast.LENGTH_SHORT).show();
                camera.stopPreview(); // 关掉亮灯
                camera.release(); // 关掉照相机
                isopent = false;
            }
        }
    }

    private void sendNotification() {
        Notification.Builder builder = new Notification.Builder(this);
        builder.setSmallIcon(R.mipmap.ic_launcher);
        builder.setTicker("这是一个通知消息这是一个通知消息这是一个通知消息" + (index++));
        builder.setContentTitle("这是title" + (index));
        builder.setContentText("这是content" + (index));
        builder.setWhen(System.currentTimeMillis());
//        builder.setDefaults(Notification.DEFAULT_LIGHTS);
//        builder.setLights(Color.RED, 3000, 3000);
        builder.setDefaults(Notification.DEFAULT_SOUND);
        builder.setDefaults(Notification.DEFAULT_VIBRATE);
        long[] pattern = {500,500,500,500,500,500};
        builder.setVibrate(pattern);
//        builder.setDefaults(Notification.DEFAULT_ALL);
        builder.setSound(Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.zz));
        //点击通知自动消失
        builder.setAutoCancel(true);
        Intent intent = new Intent(this,MainActivity.class);
        PendingIntent pint = PendingIntent.getActivity(this, 0, intent, 0);
        builder.setContentIntent(pint);
        Notification notification;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            notification = builder.build();
        } else {
            notification = builder.getNotification();
        }
        notification.flags = Notification.FLAG_SHOW_LIGHTS;
        notification.ledARGB = 0xff0000ff;
        notification.ledOnMS = 300;
        notification.ledOffMS = 300;
        manager.notify(noti_id, notification);
    }
}
import android.app.Activ