尝试使用我的HTC Desire HD创建一个短信弹出应用程序（只是为了学习），遇到了一个有趣的事情。
通常的故事，我有 BroadcastReceiver ，它会启动服务，然后启动 MainActivity 。
MainActivity 有一个回复按钮，可以启动 ReplyActivity 。
我回复后使用setResult将 MainActivity 中的函数运行到 finish（），然后使用 finish（） my ReplyActivity
这一切都以id希望关闭，但随后我的 ReplyActivity 再次弹出...我在 MainActivity 中添加了一些日志，但它没有重新调用< strong> ReplyActivity ，因此它会重新出现。
我没有正确使用 finish（）功能吗？或者这是 BroadcastReceiver ？
发生的事情提前感谢您的任何信息。
修改 的
感谢您的回复......对于迟到的回复感到抱歉......
我将'singleInstance'添加到我的清单中，但无济于事......
我应该说当我最初收到短信时，我的主要活动正常启动，如果我只是关闭，我不回复一切正常，但如果我做回复，下次我收到短信回复屏幕将在主要人员之前启动，几乎是独立的...也许我没有正确地关闭它
我已附上以下代码...请随时评论任何不正确的做法，因为我还在学习。
再次感谢
主要活动
package com.b.sms;
import java.sql.Date;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.TimeZone;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.telephony.SmsMessage;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
@SuppressWarnings("deprecation")
public class Main extends Activity {
protected static final int CREATE_REQUEST_CODE = 1;
TextView msgfrom;
TextView msgtime;
TextView msgtext;
ImageView contactpic;
Bitmap bitmap;
String body;
String from;
String timeSent;
Date date;
String photoNo;
long timestamp;
String soundUri = "A";
String ret_soundUri;
Button close;
Button delete;
Button reply;
SharedPreferences mPrefs;
ContentResolver cr;
String testValue;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPrefs = getPreferences(MODE_PRIVATE);
setContentView(R.layout.main);
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
Object[] pdus = (Object[]) bundle.get("pdus");
SmsMessage[] messages = new SmsMessage[pdus.length];
for (int i = 0; i < messages.length; i++) {
messages[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
body = messages[i].getDisplayMessageBody();
from = messages[i].getDisplayOriginatingAddress();
timestamp = messages[i].getTimestampMillis();
date = new Date(timestamp);
Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
cal.setTime(date);
timeSent = "Message received at "+ cal.get(Calendar.HOUR) + ":"
+ cal.get(Calendar.MINUTE)
+ ":" + cal.get(Calendar.SECOND)
+" "+ (cal.get(Calendar.AM_PM)==0?"AM":"PM");
}
}
setUpButtons();
setFields();
}
private void setFields() {
msgfrom = (TextView) findViewById(R.id.msg_from);
msgtime = (TextView) findViewById(R.id.msg_time);
msgtext = (TextView) findViewById(R.id.msg_text);
msgfrom.setText(getSenderName(from));
msgtime.setText(timeSent);
msgtext.setText(body);
}
private String getSenderName(String sent_number) {
contactpic = (ImageView) findViewById(R.id.icon);
cr = getContentResolver();
Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
String concatNo = sent_number.substring(4, sent_number.length());
if (cursor.moveToFirst()) {
Cursor phones = cr.query(Phone.CONTENT_URI, null, null, null, null);
while (phones.moveToNext()) {
String hasPhoto = phones.getString(phones.getColumnIndex(Phone.PHOTO_ID));
photoNo = phones.getString(phones.getColumnIndex(Phone.RAW_CONTACT_ID));
int photoId = Integer.parseInt(photoNo);
String number = phones.getString(phones.getColumnIndex(Phone.NUMBER)).replace("-", "");;
String sender_name = phones.getString(phones.getColumnIndex(Phone.DISPLAY_NAME));
if (number.contains(concatNo)) {
if (hasPhoto != null) {
Uri myPerson = ContentUris.withAppendedId(People.CONTENT_URI, photoId);
Cursor cur = managedQuery(myPerson, null, null, null, null);
Bitmap bitmap = People.loadContactPhoto(this, myPerson, R.drawable.ic_launcher, null);
contactpic.setImageBitmap(bitmap);
}
return sender_name;
}
}
phones.close();
}
cursor.close();
return sent_number;
}
private void setUpButtons() {
close = (Button) findViewById(R.id.button_close);
delete = (Button) findViewById(R.id.button_delete);
reply = (Button) findViewById(R.id.button_reply);
close.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
markAsRead(false);
finish();
}
}
);
delete.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
deleteSMS();
finish();
}
}
);
reply.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent disIntent2 = new Intent(Main.this, Reply.class);
disIntent2.putExtra("to", from);
disIntent2.putExtra("photo", photoNo);
disIntent2.putExtra("from", getSenderName(from));
startActivity(disIntent2);
finish();
}
}
);
}
public void deleteSMS() {
markAsRead(false);
}
private void markAsRead(Boolean delete) {
Uri uriSMSURI = Uri.parse("content://sms/inbox");
Cursor cur = getContentResolver().query(uriSMSURI, null, null, null, null);
String str_tstamp = String.valueOf(timestamp);
while (cur.moveToNext()) {
String address = cur.getString(cur.getColumnIndex("address"));
String msgbody = cur.getString(cur.getColumnIndexOrThrow("body"));
String tStamp = cur.getString(cur.getColumnIndex("date"));
String markedAsRead = cur.getString(cur.getColumnIndex("read"));
String messageId = cur.getString(cur.getColumnIndex("_id"));
if (tStamp.equals(str_tstamp)) {
if (from.equals(address)) {
if (msgbody.equals(body)) {
if (delete) {
// delete
} else {
if (markedAsRead.equals("0")) {
ContentValues values = new ContentValues();
values.put("READ", 1);
String selection = null;
String[] selectionArgs = null;
Main.this.getContentResolver().update(
Uri.parse("content://sms/" + messageId),
values,
selection,
selectionArgs);
}
}
}
}
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == 123) {
markAsRead(false);
finish();
}
}
}
回复活动
package com.b.sms;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.ContentUris;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
public class Reply extends Activity {
Button cancel;
Button send;
EditText toSend;
TextView toField;
String toNo;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reply);
setUpButtons();
setFields();
}
private void setFields() {
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
String to = bundle.getString("from");
toNo = bundle.getString("to");
toField = (TextView) findViewById(R.id.msg_to);
toField.setText("To: " + to);
ImageView contactpic = (ImageView) findViewById(R.id.icon);
String photoNo = bundle.getString("photo");
int photoId = Integer.parseInt(photoNo);
Uri myPerson = ContentUris.withAppendedId(People.CONTENT_URI, photoId);
Cursor cur = managedQuery(myPerson, null, null, null, null);
Bitmap bitmap = People.loadContactPhoto(this, myPerson, R.drawable.ic_launcher, null);
contactpic.setImageBitmap(bitmap);
}
}
private void setUpButtons() {
cancel = (Button) findViewById(R.id.button_cancel);
send = (Button) findViewById(R.id.button_send);
cancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
finish();
}
}
);
send.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
sendSMS();
}
}
);
}
private void sendSMS() {
toSend = (EditText) findViewById(R.id.msgTxt);
PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this, Reply.class), 0);
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(toNo, null, toSend.getText().toString(), pi, null);
Intent intent = new Intent();
setResult(123, intent);
finish();
}
}
- 清单文件 -
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.b.sms"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".Main"
android:theme="@style/Theme.D1NoTitleDim" >
</activity>
<activity
android:label="@string/app_name"
android:name=".Reply"
android:theme="@style/Theme.D1NoTitleDim"
android:launchMode="singleTask" />
<activity
android:label="@string/app_name"
android:name=".Sound"/>
<receiver android:name="SmsReceiver" android:enabled="true">
<intent-filter android:priority="2147483647">
<action android:name="android.provider.Telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>
<service android:name=".SmsReceiverService"/>
</application>
</manifest>
答案 0 :(得分：0)
看起来正在为ReplyActivity创建多个实例。因此，通过将以下属性应用于清单文件中的ReplyActivity来使其成为单个实例：
<activity android:name=".ReplyActivity" android:launchMode="singleInstance" ... >