android错误---Notification用法，注意API版本

今天在公司的bugly上看的一个问题就是notification的错误提示android4.0的notification没有build方法，所以就了解了下。这里和大家分享下。

按步骤来 1、获取Notification管理器

// NotificationManager 是一个系统Service，必须通过 getSystemService()方法来获取。 NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

2、建一个Notification，设置状态栏显示样式 这里我们就要分版本了 首先是API>16的

notification=new Notification.Builder(this) .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("通知") .setContentText("你的余额已不足！") .setContentIntent(pendingIntent) //setContentIntent定义点击通知跳转 .build();

然后是11

Notification.Builder builder = new Notification.Builder(MainActivity.this) .setAutoCancel(true) .setContentTitle("title") .setContentText("describe") .setContentIntent(pendingIntent) .setSmallIcon(R.mipmap.ic_launcher) .setWhen(System.currentTimeMillis()) .setOngoing(true); notification=builder.getNotification();

然后是API小于11的

Notification notification = new Notification( 　　R.mipmap.ic_launcher, "This is ticker text", 　　 System.currentTimeMillis());

但是分三部实在是太麻烦了所以给大家另一个方案是简化api<16的，这个方法是api>4 api<16都可以用，（至于API<4,拜托就不用考虑的了吧大哥）

NotificationCompat.Builder builder = new NotificationCompat.Builder(this) .setSmallIcon(R.mipmap.ic_launcher) .setTicker("This is ticker text") .setWhen(System.currentTimeMillis()); notification =builder.getNotification(); //调用builder.getNotification()来生成Notification

贴出实例代码

package com.example.admin.apinotification; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Intent; import android.os.Build; import android.os.Bundle; import android.support.v4.app.NotificationCompat; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { private Button btn_click; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btn_click = (Button) findViewById(R.id.btn_click); btn_click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { nation(); } }); } public void nation(){ // NotificationManager 是一个系统Service，必须通过 getSystemService()方法来获取。 NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); //通知的点击跳转的 Intent intent =new Intent(MainActivity.this,MainActivity.class); //创建PendingIntent对象 PendingIntent pendingIntent = PendingIntent.getActivity(this, 1, intent, 0); Notification notification = null; if(Build.VERSION.SDK_INT >=16) { notification=new Notification.Builder(this) .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle("通知") .setContentText("你的余额已不足！") .setContentIntent(pendingIntent) //setContentIntent定义点击通知跳转 .build(); }else if (Build.VERSION.SDK_INT < 16 && Build.VERSION.SDK_INT >11 ){ Notification.Builder builder = new Notification.Builder(MainActivity.this) .setAutoCancel(true) .setContentTitle("title") .setContentText("describe") .setContentIntent(pendingIntent) .setSmallIcon(R.mipmap.ic_launcher) .setWhen(System.currentTimeMillis()) .setOngoing(true); notification=builder.getNotification(); }else if (Build.VERSION.SDK_INT < 16 && Build.VERSION.SDK_INT>4){ NotificationCompat.Builder builder = new NotificationCompat.Builder(this) .setSmallIcon(R.mipmap.ic_launcher) .setTicker("This is ticker text") .setWhen(System.currentTimeMillis()); notification =builder.getNotification(); //调用builder.getNotification()来生成Notification } // 执行状态栏的公布方法 nm.notify(1,notification); } }