实现桌面应用图标的动态隐藏和显示，触发事件为SIM卡的状态

package com.songyan.accountrecord;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.telephony.TelephonyManager;

/**
 * Created by songyan on 2017/6/13.
 */

public class StkShowOrNot extends BroadcastReceiver{
    private static final String TAG="StkShoOrNot";
    private static final String ACTIVITY="com.android.stk.StkMain";//要进行显示和隐藏的launcher类
    @Override
    public void onReceive(Context context, Intent intent) {
        TelephonyManager tm=(TelephonyManager)context.getSystemService(Service
        .TELEPHONY_SERVICE);
        int state=tm.getSimState();
        switchState(context,state);
    }

    private void switchState(Context context,int state){
        switch (state){
            case TelephonyManager.SIM_STATE_READY:
                enableComponent(context,ACTIVITY);
                break;
            case TelephonyManager.SIM_STATE_ABSENT:
            case TelephonyManager.SIM_STATE_UNKNOWN:
            case TelephonyManager.SIM_STATE_PIN_REQUIRED:
            case TelephonyManager.SIM_STATE_PUK_REQUIRED:
            case TelephonyManager.SIM_STATE_NETWORK_LOCKED:
            default:
                disableComponent(context,ACTIVITY);
                break;
        }
    }
    private void enableComponent(Context context,String klass){
        ComponentName name=new ComponentName(context,klass);
        PackageManager pm=context.getPackageManager();

        pm.setComponentEnabledSetting(name,PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                PackageManager.DONT_KILL_APP);
    }

    private void disableComponent(Context context,String klass){
        ComponentName name=new ComponentName(context,klass);
        PackageManager pm=context.getPackageManager();

        pm.setComponentEnabledSetting(name,PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                PackageManager.DONT_KILL_APP);
    }
}

AndroidManifest.xml添加，为了使开机时就触发事件，需要添加开机权限和开机广播类型