在Android中使用Java实现无需重启的SIM卡变更检测

<receiver android:name=".SimCardChangeReceiver">
    <intent-filter>
        <action android:name="android.intent.action.SIM_STATE_CHANGED" />
    </intent-filter>
</receiver>

public class SimCardChangeReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(TelephonyManager.ACTION_SIM_CARD_STATE_CHANGED)) {
            TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
            int simState = telephonyManager.getSimState();
            
            // 处理SIM卡变更事件
            switch (simState) {
                case TelephonyManager.SIM_STATE_ABSENT:
                    // SIM卡被移除
                    break;
                case TelephonyManager.SIM_STATE_READY:
                    // SIM卡已准备好
                    break;
                // 其他SIM卡状态的处理
            }
        }
    }
}

SimCardChangeReceiver simCardChangeReceiver = new SimCardChangeReceiver();
IntentFilter intentFilter = new IntentFilter(TelephonyManager.ACTION_SIM_CARD_STATE_CHANGED);
registerReceiver(simCardChangeReceiver, intentFilter);

Toast.makeText(context, "SIM卡状态变更", Toast.LENGTH_SHORT).show();