我正在开发一个Android应用程序，它将从特定号码接收MMS并在我的应用程序中显示它，我发现这个代码但是当我运行它时，没有发生任何事情
public class MMSActivity extends Activity {
ImageView imageView1;
TextView t;
MMSMonitor myMonitor = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
t= (TextView) findViewById(R.id.t);
imageView1= (ImageView) findViewById(R.id.imageView1);
startMMSMonitor();
}
@Override
public void onDestroy()
{
super.onDestroy();
if(myMonitor != null)
myMonitor.stopMMSMonitoring();
}
protected void startMMSMonitor()
{
Context ctx = this;
ContentResolver cr = this.getContentResolver();
myMonitor = new MMSMonitor(cr, ctx);
myMonitor.startMMSMonitoring();
}
public void setMMSText(String text)
{
//Do whatever you want
}
public void setMMSImageData(byte[] data, String fileType)
{
//Do whatever you want
}
public class MMSMonitor {
private ContentResolver contentResolver = null;
private Handler mmshandler = null;
private ContentObserver mmsObserver = null;
public String mmsNumber = "";
public boolean monitorStatus = false;
public String activationCode;
int mmsCount = 0;
String lastMMSTxId = null;
String code;
public MMSMonitor(final ContentResolver contentResolver, final Context mainContext) {
this.contentResolver = contentResolver;
mmshandler = new MMSHandler();
mmsObserver = new MMSObserver(mmshandler);
System.out.println( "MMSMonitor :: ***** Start MMS Monitor *****");
}
public void startMMSMonitoring() {
try {
monitorStatus = false;
if (!monitorStatus) {//do not get it
//it is observe anychange like delete or incoming MMS etc...
//ContentObserver is used to get notified if the data residing in the data set has changed.
//So it is used to observe the data source for changes.
//Content providers manage access to a structured set of data
//Content providers are the standard interface that connects data
//in one process with code running in another process.
//When you want to access data in a content provider, you use the ContentResolver object
contentResolver.registerContentObserver(Uri.parse("content://mms-sms"), true, mmsObserver);
Uri uriMMSURI = Uri.parse("content://mms");
Cursor mmsCur = contentResolver.query(uriMMSURI, null, "msg_box = 4", null, "_id");
if (mmsCur != null && mmsCur.getCount() > 0) {
//Number of MMS
mmsCount = mmsCur.getCount();
System.out.println( "MMSMonitor :: Init MMSCount ==" + mmsCount);
}
}
} catch (Exception e) {
System.out.println( "MMSMonitor :: startMMSMonitoring Exception== "+ e.getMessage());
}
}
public void stopMMSMonitoring() {
try {
monitorStatus = false;
if (!monitorStatus){
contentResolver.unregisterContentObserver(mmsObserver);
}
} catch (Exception e) {
System.out.println( "MMSMonitor :: stopMMSMonitoring Exception == "+ e.getMessage());
}
}
//A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue.
class MMSHandler extends Handler {
public void handleMessage(final Message msg) {
//Log("MMS", "MMSMonitor :: Handler");
}
}
class MMSObserver extends ContentObserver {
private Handler mms_handle = null;
public MMSObserver(final Handler mmshandle) {
super(mmshandle);
mms_handle = mmshandle;
}
public void onChange(final boolean bSelfChange) {
super.onChange(bSelfChange);
//Log("MMS", "MMSMonitor :: Onchange");
Thread thread = new Thread() {
public void run() {
try {
monitorStatus = true;
// Send message to Activity
Message msg = new Message();
mms_handle.sendMessage(msg);
// Getting the mms count
Uri uriMMSURI = Uri.parse("content://mms/");
Cursor mmsCur = contentResolver.query(uriMMSURI, null, "msg_box = 4 or msg_box = 1", null,"_id");
int currMMSCount = 0;
if (mmsCur != null && mmsCur.getCount() > 0) {
currMMSCount = mmsCur.getCount();
}
if (currMMSCount > mmsCount) {
mmsCount = currMMSCount;
mmsCur.moveToLast();
// get id , subject
//String subject = mmsCur.getString(6);
//int id = Integer.parseInt(mmsCur.getString(0));
String subject = mmsCur.getString(mmsCur.getColumnIndex("sub"));
int id = Integer.parseInt(mmsCur.getString(mmsCur.getColumnIndex("_id")));
System.out.println( "MMSMonitor :: _id == " + id);
System.out.println( "MMSMonitor :: Subject == " + subject);
byte[] imgData = null;
String message = "";
String address = "";
String fileName = "";
String fileType = "";
String direction = "";
// GET DIRECTION
boolean isIncoming = false;
//int type = Integer.parseInt(mmsCur.getString(12));
int type = Integer.parseInt(mmsCur.getString(mmsCur.getColumnIndex("m_type")));
if (type == 128) {
direction = "0";
System.out.println( "MMSMonitor :: Type == Outgoing MMS");
} else {
isIncoming = true;
direction = "1";
System.out.println( "MMSMonitor :: Type == Incoming MMS");
}
// Get Parts
Uri uriMMSPart = Uri.parse("content://mms/part");
Cursor curPart = contentResolver
.query(uriMMSPart, null, "mid = " + id, null, "_id");
System.out.println( "MMSMonitor :: parts records length == "+ curPart.getCount());
curPart.moveToLast();
do {
//String contentType = curPart.getString(3);
//String partId = curPart.getString(0);
String contentType = curPart.getString(curPart.getColumnIndex("ct"));
String partId = curPart.getString(curPart.getColumnIndex("_id"));
System.out.println( "MMSMonitor :: partId == " + partId);
System.out.println( "MMSMonitor :: part mime type == "+ contentType);
// Get the message
if (contentType.equalsIgnoreCase("text/plain"))
{
System.out.println("MMSMonitor :: ==== Get the message start ====");
byte[] messageData = readMMSPart(partId);
if (messageData != null && messageData.length > 0)
message = new String(messageData);
if(message == ""){
Cursor curPart1 = contentResolver
.query(uriMMSPart, null, "mid = " + id +
" and _id =" + partId,null, "_id");
for (int i = 0; i < curPart1.getColumnCount(); i++)
{
System.out.println("MMSMonitor :: Column Name : " +
curPart1.getColumnName(i));
}
curPart1.moveToLast();
message = curPart1.getString(13);
}
System.out.println("MMSMonitor :: Txt Message == " + message);
//SEND DATA TO ACTIVITY
setMMSText(message);
}
// Get Image
else if (isImageType(contentType) == true) {
System.out.println("MMSMonitor :: ==== Get the Image start ====");
fileName = "mms_" + partId;
fileType = contentType;
imgData = readMMSPart(partId);
System.out.println( "MMSMonitor :: Iimage data length == "+ imgData.length);
//SEND DATA TO ACTIVITY
setMMSImageData(imgData, fileType);
}
} while (curPart.moveToPrevious());
}
} catch (Exception e) {
System.out.println( "MMSMonitor Exception:: "+ e.getMessage());
}
}
};
thread.start();
}
}
private byte[] readMMSPart(String partId) {
byte[] partData = null;
Uri partURI = Uri.parse("content://mms/part/" + partId);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = null;
try {
System.out.println("MMSMonitor :: Entered into readMMSPart try..");
ContentResolver mContentResolver = contentResolver;
is = mContentResolver.openInputStream(partURI);
byte[] buffer = new byte[256];
int len = is.read(buffer);
while (len >= 0) {
baos.write(buffer, 0, len);
len = is.read(buffer);
}
partData = baos.toByteArray();
//Log.i("", "Text Msg :: " + new String(partData));
} catch (IOException e) {
System.out.println( "MMSMonitor :: Exception == Failed to load part data");
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
System.out.println("Exception :: Failed to close stream");
}
}
}
return partData;
}
private boolean isImageType(String mime) {
boolean result = false;
if (mime.equalsIgnoreCase("image/jpg")
|| mime.equalsIgnoreCase("image/jpeg")
|| mime.equalsIgnoreCase("image/png")
|| mime.equalsIgnoreCase("image/gif")
|| mime.equalsIgnoreCase("image/bmp")) {
result = true;
}
return result;
}
}
}
//=====================
}
任何答案我都会很感激，
也 这句话假设要做什么？
Cursor mmsCur = contentResolver.query(uriMMSURI, null, "msg_box = 4 or msg_box = 1", null,"_id");
答案 0 :(得分：1)
我认为你的方法甚至不是正确的方法。 Afaik你必须注册一个广播接收器并在你的应用程序中处理/实现它，以实现你想要的。
见
Android MMS Broadcast receiver Detecting new MMS (Android 2.1) Detecting MMS messages on Android
您需要所有信息;）