一般的notification
1 package com.qianfeng.gp08_day22_notification;
2
3 import android.os.Bundle;
4 import android.support.v4.app.NotificationCompat;
5 import android.view.Gravity;
6 import android.view.View;
7 import android.view.View.OnClickListener;
8 import android.widget.Toast;
9 import android.app.Activity;
10 import android.app.Notification;
11 import android.app.NotificationManager;
12 import android.app.PendingIntent;
13 import android.content.Context;
14 import android.content.Intent;
15
16
17 /**
18 * 使用的v4包中的NotificationCompat
19 * @author qq
20 *
21 */
22 public class MainActivity extends Activity{
23
24 @Override
25 protected void onCreate(Bundle savedInstanceState) {
26 super.onCreate(savedInstanceState);
27 setContentView(R.layout.activity_main);
28 }
29
30 public void btnClick(View v)
31 {
32 //创建通知 的构建器对象
33 NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
34
35 //设置通知的相关属性
36 builder.setContentTitle("通知");
37
38 builder.setContentText("下雨了");
39
40 //必须设置，否则程序会崩溃
41 builder.setSmallIcon(R.drawable.ic_launcher);
42
43 //得到通知管理对象---属于系统服务
44 NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
45
46 //得到通知对象
47 Notification notification = builder.build();
48
49 //使用通知管理对象发送通知
50 manager.notify((int)System.currentTimeMillis(), notification);//如果id相同，即使发送多个通知，也只显示一个
51
52 }
53
54 public void btnClick2(View v)
55 {
56 NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
57
58 builder.setContentTitle("你有短信");
59 builder.setContentText("你有3条短信");
60 builder.setSmallIcon(R.drawable.ic_launcher);
61 builder.setNumber(3);//设置数量
62 //收到通知可以 是声音，灯光，震动
63 //DEFAULT_VIBRATE 需要权限
64 builder.setDefaults(Notification.DEFAULT_VIBRATE);
65
66 Notification notification = builder.build();
67
68 NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
69
70 manager.notify(168, notification);
71
72 }
73
74 public void btnClick3(View v)
75 {
76 NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
77
78 builder.setContentTitle("下载图片");
79 builder.setContentText("正在下载");
80 builder.setSmallIcon(R.drawable.ic_launcher);
81 builder.setOngoing(true);//设置不可以被删除
82
83
84 Notification n = builder.build();
85
86 NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
87
88 manager.notify(188, n);
89 }
90
91 public void btnClick4(View v)
92 {
93 NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
94
95 builder.setContentTitle("你有短信")
96 .setContentText("你有6条短信")
97 .setSmallIcon(R.drawable.ic_launcher)
98 .setNumber(6)
99 .setDefaults(Notification.DEFAULT_ALL);
100
101 Intent intent = new Intent(this,MainActivity.class);
102
103 //可以当通知被点击时自动执行 startActiivty()
104 PendingIntent pending = PendingIntent.getActivity(this, 6, intent, PendingIntent.FLAG_CANCEL_CURRENT);
105 //跳转后通知会消失
106 builder.setContentIntent(pending);
107
108 builder.setAutoCancel(true);//设置通知自动消失
109
110 Notification ntf = builder.build();
111
112 NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
113
114 manager.notify(88, ntf);
115 }
116
117 public void btnClick5(View v)
118 {
119 Toast toast = new Toast(this);
120
121 View view = getLayoutInflater().inflate(R.layout.toast_layout, null);
122
123 toast.setView(view);//设置吐司使用的布局
124
125 toast.setGravity(Gravity.CENTER, 0,0);//设置吐司的显示位置
126
127 toast.setDuration(Toast.LENGTH_SHORT);
128
129 toast.show();
130 }
131
132
133
134
135
136 }
mainActivity.java
带进度条的异步下载notification
1 package com.example.asynctasknotification;
2
3 import android.os.Bundle;
4 import android.app.Activity;
5 import android.view.Menu;
6 import android.view.View;
7 import android.view.View.OnClickListener;
8 import android.widget.Button;
9 import android.widget.ImageView;
10
11 public class MainActivity extends Activity {
12
13 private ImageView imageView;
14 private Button btn;
15 private String path="http://images2015.cnblogs.com/blog/493196/201509/493196-20150901203057606-579869820.jpg";
16 @Override
17 protected void onCreate(Bundle savedInstanceState) {
18 super.onCreate(savedInstanceState);
19 setContentView(R.layout.activity_main);
20
21 imageView=(ImageView) findViewById(R.id.iv);
22 btn=(Button) findViewById(R.id.btn);
23
24 btn.setOnClickListener(new OnClickListener() {
25
26 @Override
27 public void onClick(View v) {
28 new MyAsyncTask(MainActivity.this,imageView).execute(path);
29
30 }
31 });
32
33
34
35
36 }
37
38 @Override
39 public boolean onCreateOptionsMenu(Menu menu) {
40 // Inflate the menu; this adds items to the action bar if it is present.
41 getMenuInflater().inflate(R.menu.main, menu);
42 return true;
43 }
44
45 }
mainActivity.java
1 package com.example.asynctasknotification;
2
3 import java.io.ByteArrayOutputStream;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.net.HttpURLConnection;
7 import java.net.MalformedURLException;
8 import java.net.URL;
9
10 import android.app.Notification;
11 import android.app.NotificationManager;
12 import android.content.Context;
13 import android.graphics.Bitmap;
14 import android.graphics.BitmapFactory;
15 import android.os.AsyncTask;
16 import android.support.v4.app.NotificationCompat;
17 import android.widget.ImageView;
18
19 public class MyAsyncTask extends AsyncTask<String, Integer, Bitmap> {
20
21 private NotificationCompat.Builder builder;
22 private NotificationManager manager;
23 private ImageView imageView;
24 private Context context;
25
26 public MyAsyncTask(Context context, ImageView imageView) {
27 this.imageView = imageView;
28 this.context = context;
29 manager = (NotificationManager) context
30 .getSystemService(Context.NOTIFICATION_SERVICE);
31 builder = new NotificationCompat.Builder(context);
32 builder.setContentTitle("下载图片");
33 builder.setContentText("正在下载");
34 builder.setSmallIcon(R.drawable.ic_launcher);
35 }
36
37 @Override
38 protected Bitmap doInBackground(String... params) {
39
40 Bitmap bitmap = null;
41 URL url;
42 try {
43 url = new URL(params[0]);
44 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
45 conn.setRequestMethod("GET");
46 conn.setConnectTimeout(5000);
47 conn.setDoInput(true);
48
49 InputStream in = null;
50 if (conn.getResponseCode() == 200) {
51 in = conn.getInputStream();
52 ByteArrayOutputStream baos = new ByteArrayOutputStream();
53 int total = conn.getContentLength();
54 int len = 0;
55 int count = 0;
56 byte[] by = new byte[1024];
57 while ((len = in.read(by)) != -1) {
58 baos.write(by, 0, len);
59 count += len;
60 publishProgress((int) (100 * count / total));
61 }
62 byte[] b = baos.toByteArray();
63 bitmap = BitmapFactory.decodeByteArray(b, 0, b.length);
64 }
65 } catch (MalformedURLException e) {
66 e.printStackTrace();
67 } catch (IOException e) {
68 e.printStackTrace();
69 }
70 return bitmap;
71 }
72
73 @Override
74 protected void onCancelled() {
75 // TODO Auto-generated method stub
76 super.onCancelled();
77 }
78
79 @Override
80 protected void onPreExecute() {
81 super.onPreExecute();
82
83 builder.setOngoing(true);// 设置不可以被删除
84 builder.setProgress(100, 0, false);
85
86 manager.notify(188, builder.build());
87
88 }
89
90 @Override
91 protected void onPostExecute(Bitmap result) {
92
93 builder.setOngoing(false);// 设置可以被删除
94 builder.setContentText("下载完毕");
95 builder.setProgress(0, 0, false);
96 manager.notify(188, builder.build());
97
98 imageView.setImageBitmap(result);
99
100 }
101
102 @Override
103 protected void onProgressUpdate(Integer... values) {
104 builder.setProgress(100, values[0], false);
105 builder.setContentText("已下载"+values[0]+"%");
106 manager.notify(188, builder.build());
107 }
108
109 }
asynctask
时间： 2024-08-13 19:45:49