android 自动获取短信验证码

很多项目中都会用到，自动获取验证码填到输入框，这样用户体验比较好，废话不多说，现在实现

用的是ContentObserver这个类,帮助我们来监听短信数据库发生的变化

package com.smart.android.activity;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.EditText;import com.smart.android.R;import com.smart.android.base.BaseActivity;import com.smart.android.utils.SmsObserver;/** * @Title: * @Description: * @Author:leo * @Since: * @Version: */public class ObtainMsgActivity extends BaseActivity {    public static final int MSG_RECEIVED_CODE = 1;    private EditText mEditText;    private SmsObserver mObserver;    private Handler mHandler = new Handler(){        @Override        public void handleMessage(Message msg) {            if (msg.what == MSG_RECEIVED_CODE)            {                String code = (String)msg.obj;                mEditText.setText(code);            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_obtainmsg);        mEditText = (EditText)findViewById(R.id.et_msg);        mObserver = new SmsObserver(ObtainMsgActivity.this, mHandler);        Uri uri = Uri.parse("content://sms");        getContentResolver().registerContentObserver(uri, true, mObserver);    }}

package com.smart.android.utils;import android.content.Context;import android.database.ContentObserver;import android.database.Cursor;import android.net.Uri;import android.os.Handler;import com.smart.android.activity.ObtainMsgActivity;import java.util.regex.Matcher;import java.util.regex.Pattern;/** * @Title: * @Description: * @Author:leo * @Since: * @Version: */public class SmsObserver extends ContentObserver {    private Handler mHandler;    private Context mContext;    public SmsObserver(Context context,Handler handler) {        super(handler);        mContext = context;        mHandler = handler;    }    @Override    public void onChange(boolean selfChange, Uri uri) {        super.onChange(selfChange, uri);        String code;        if (uri.toString().equals("content://sms/raw"))  ////onChange会执行二次,第二次短信才会入库        {            return ;        }        Uri inboxUri = Uri.parse("content://sms/inbox");        Cursor c = mContext.getContentResolver().query(inboxUri, null, null, null, "date desc");        if (c != null) {            if (c.moveToFirst()) {                String body = c.getString(c.getColumnIndex("body"));//获取短信内容                Pattern pattern = Pattern.compile("(\\d{6})");//正则表达式   连续6位数字                Matcher matcher = pattern.matcher(body);                if (matcher.find()) {                    code = matcher.group(0);                    mHandler.obtainMessage(ObtainMsgActivity.MSG_RECEIVED_CODE, code).sendToTarget();                }            }            c.close();        }    }}

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