发送，取消notification，打开，关闭闪光灯。

来源：互联网发布：丰城生活丰城网络问政编辑：程序博客网时间：2024/05/21 05:57

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);    }}

xml文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="send notification"        android:id="@+id/send" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="cancel notification"        android:id="@+id/cancel" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="闪光灯"        android:id="@+id/light" /></LinearLayout>

实现功能：发送，取消notification，打开，关闭闪光灯。

闪光灯没效果，在研究，哪位朋友看出来问题，留言我，谢谢。

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