Android 在桌面显示对话框

来源：互联网发布：移动硬盘格式化后数据恢复编辑：程序博客网时间：2024/05/21 04:02

项目地址 https://github.com/OOCZC/Android_SpamMess

需求：当来新短信时，即便在桌面或其他App界面时，也能弹出对话框。

思路：App接收短信广播，然后在BroadcastReceiver的onReceive中用intent打开主题为对话框的Activity。

先实现接收短信广播：

在AndroidManifest.xml中添加权限，注册广播，注册新Activity为对话框主题。

<uses-permission android:name="android.permission.RECEIVE_SMS" /><receiver            android:name=".MyReceiver"            android:enabled="true"            android:exported="true">            <intent-filter android:priority="1000">                <action android:name="android.provider.Telephony.SMS_RECEIVED" />            </intent-filter></receiver><activity          android:name=".Dialog_Activity"          android:theme="@style/Theme.AppCompat.Dialog"/>

在广播的onReceive中启动Dialog_Activity

MyReceiver.java (extend BroadcastReceiver)

        Intent intent1 = new Intent();        intent1.setClass(context,Dialog_Activity.class);        intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        // 设置为Intent.FLAG_ACTIVITY_NEW_TASK，必要        intent1.putExtra("number", "" + msg.getOriginatingAddress());        intent1.putExtra("body", "" + msg.getDisplayMessageBody());        this.abortBroadcast(); //结束此广播，不再继续传给其他App        context.startActivity(intent1);

附：接收新短信，用于启动Activity的广播MyReceiver

public class MyReceiver extends BroadcastReceiver {public void onReceive(Context context, Intent intent) {        // an Intent broadcast.        Bundle bundle = intent.getExtras();        SmsMessage msg = null;        if (null != bundle) {            Object[] smsObj = (Object[]) bundle.get("pdus");            for (Object object : smsObj) {                msg = SmsMessage.createFromPdu((byte[]) object);                Date date = new Date(msg.getTimestampMillis());//时间                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");                String receiveTime = format.format(date);                System.out.println("number:" + msg.getOriginatingAddress()                        + "   body:" + msg.getDisplayMessageBody() + "  time:"                        + msg.getTimestampMillis());            }        }        Intent intent1 = new Intent();        intent1.setClass(context,Dialog_Activity.class);        intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        intent1.putExtra("number", "" + msg.getOriginatingAddress());        intent1.putExtra("body", "" + msg.getDisplayMessageBody());        this.abortBroadcast();        context.startActivity(intent1);}}

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