Android应用图标上的小红点Badge实现
Android应用图标上的小红点Badge实现
为了增加APP的日活，在Android中有许多的应用仿苹果的在应用图标上显示小红点。当然有着一些手机ROM对小红点的支持，比如小米，三星等。
我们下面看下如何实现：
MainActivity:
public class MainActivity extends AppCompatActivity {
private Handler handler = new Handler();
private Runnable runnable = new MyRunnable();
public class MyRunnable implements Runnable {
@Override
public void run() {
handler.postDelayed(runnable, 5000);
BadgeUtil.setBadgeCount(getApplicationContext(), getCount(), R.mipmap.ic_launcher);
}
}
private int getCount() {
return new Random().nextInt(100);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button start = (Button) findViewById(R.id.start);
Button stop = (Button) findViewById(R.id.stop);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (handler == null) {
handler = new Handler();
}
if (runnable == null) {
runnable = new MyRunnable();
}
handler.post(runnable);
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (handler != null) {
BadgeUtil.resetBadgeCount(getApplicationContext(), R.mipmap.ic_launcher);
handler.removeCallbacksAndMessages(null);
runnable = null;
handler = null;
}
}
});
}
}
BadgeUtil：目前支持小米，三星，LG，索尼,HTC等手机
public final class BadgeUtil {
private BadgeUtil() throws InstantiationException {
throw new InstantiationException("This class is not for instantiation");
}
/**
* 设置Badge 目前支持Launcher
*/
public static void setBadgeCount(Context context, int count, int iconResId) {
if (count <= 0) {
count = 0;
} else {
count = Math.max(0, Math.min(count, 99));
}
if (Build.MANUFACTURER.equalsIgnoreCase("xiaomi")) {
setBadgeOfMIUI(context, count, iconResId);
} else if (Build.MANUFACTURER.equalsIgnoreCase("sony")) {
setBadgeOfSony(context, count);
} else if (Build.MANUFACTURER.toLowerCase().contains("samsung") ||
Build.MANUFACTURER.toLowerCase().contains("lg")) {
setBadgeOfSumsung(context, count);
} else if (Build.MANUFACTURER.toLowerCase().contains("htc")) {
setBadgeOfHTC(context, count);
} else if (Build.MANUFACTURER.toLowerCase().contains("nova")) {
setBadgeOfNova(context, count);
} else {
Toast.makeText(context, "Not Found Support Launcher", Toast.LENGTH_LONG).show();
}
}
/**
* 设置MIUI的Badge
*/
private static void setBadgeOfMIUI(Context context, int count, int iconResId) {
NotificationManager mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setContentTitle("标题").setContentText("消息正文").setSmallIcon(iconResId);
Notification notification = builder.build();
try {
Field field = notification.getClass().getDeclaredField("extraNotification");
Object extraNotification = field.get(notification);
Method method = extraNotification.getClass().getDeclaredMethod("setMessageCount", int.class);
method.invoke(extraNotification, count);
} catch (Exception e) {
e.printStackTrace();
}
mNotificationManager.notify(0, notification);
}
/**
* 设置索尼的Badge
* 需添加权限：
参考文章：Badge分析&如何逼死处女座