一个小功能实现短线验证码验自动填写功能。
拿到这个功能时，首先需要怎么去拦截获取手机短信。就用观察着来观察系统里的短消息的数据库的变化，“表“内容观察者，只要数据库发生变化，都会出发该ContentObserver 的派生类。
于是，首先需要一个SMSContentObserver的监听类：
import android.content.Context;import android.database.ContentObserver;import android.database.Cursor;import android.database.CursorIndexOutOfBoundsException;import .Uri;import android.os.Handler;import net.panatrip.debugtoolbox.log.Log;import net.panatrip.biqu.manager.SMSManager;import java.lang.ref.WeakReference;//用来观察系统里短消息的数据库变化 ”表“内容观察者,只要信息数据库发生变化，都会触发该ContentObserver 派生类 public class SMSContentObserver extends ContentObserver {private static String TAG = "SMSContentObserver";private WeakReference<Context> mContext;private Handler mHandler; //更新UI线程public SMSContentObserver(Context context, Handler handler) {super(handler);mContext = new WeakReference<Context>(context);mHandler = handler;}/*** 当所监听的Uri发生改变时，就会回调此方法** @param selfChange 此值意义不大 一般情况下该回调值false*/@Overridepublic void onChange(boolean selfChange) {//查询收件箱里的内容Uri outSMSUri = Uri.parse("content://sms/inbox");Cursor c = mContext.get().getContentResolver().query(outSMSUri, null, null, null,"date desc");if (c != null && c.moveToFirst()) {try{Log.e(TAG, "the number of send is" + c.getString(c.getColumnIndex("address")) + " " + c.getString(c.getColumnIndex("body")));StringBuilder sb = new StringBuilder();sb.append(c.getString(c.getColumnIndex("body")));mHandler.obtainMessage(SMSManager.MSG_OUTBOXCONTENT, sb.toString()).sendToTarget();}catch (CursorIndexOutOfBoundsException ex){ex.printStackTrace();}finally {c.close();}}}}
然后，我们需要一个接口回调去把拦截消息显示出去，需要一个开关去接受消息和关闭消息
public class SMSManager {private SMSContentObserver smsContentObserver;public static int MSG_OUTBOXCONTENT = 2;public static String ACTION = "android.provider.Telephony.SMS_RECEIVED";private static volatile SMSManager _instance = null;private IntentFilter intentFilter;private boolean startFlag = false;private MessageListener mMessageListener;//回调接口public interface MessageListener {public void onReceived(String message);}private Handler mHandler = new Handler() {public void handleMessage(Message msg) {String outbox = (String) msg.obj;mMessageListener.onReceived(outbox);}};private SMSManager(){}public static SMSManager getInstance() {if (_instance == null) {synchronized (SMSManager.class) {if (_instance == null) {_instance = new SMSManager();}}}return _instance;}/*** 开始接收** @param context*/public void startReceiveSMS(Context context,MessageListener listener) {smsContentObserver = new SMSContentObserver(context, mHandler);mMessageListener = listener;Uri smsUri = Uri.parse("content://sms");context.getContentResolver().registerContentObserver(smsUri, true,smsContentObserver );}/*** 停止接收** @param context*/public void stopReceiveSMS(Context context) {if(smsContentObserver!=null) {context.getContentResolver().unregisterContentObserver(smsContentObserver);smsContentObserver=null;}}
页面的调用
SMSManager.getInstance().startReceiveSMS(getApplicationContext(), new SMSManager.MessageListener() {@Override public void onReceived(String message) {String code = BQUtils.patternCode(message); etCode.setText(code); }});}
