我建立了一个SMS发送/接收活动，并且一切正常。接收部分只是将我所有来自Android消息应用程序的文本加载到ListView中。这也可以。问题是当收到新短信时，它立即崩溃。即使我在另一个应用程序中或在主屏幕上，也会弹出一个窗口，提示我的应用程序已崩溃，并在每次收到新消息时不断重新崩溃。为什么崩溃了，该如何解决？当收到新消息时，包含消息的ListView应该更新。我将这些代码拼凑在一起，因此很可能丢失了一些内容。另外，只需关注SMSReceiver类（在SMSListFragment.java中）和refreshSmsInbox()（在SMSMain.java中），因为这些地方就是加载到ListView中的地方。另外，updateList()将更新整个过程，但前提是收件箱中有预先存在的邮件。如果更新实际上可以实时更新，那就太好了。那可能吗？提前致谢。
在我的清单中，这是我的相关权限：
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<receiver android:name=".SMSReceiver"
android:exported="true">
<intent-filter android:priority="999">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
SMSMain.java
package org.azurespot.practiceapp.sms;
import java.util.ArrayList;
import org.azurespot.practiceapp.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.ActivityNotFoundException;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.speech.RecognizerIntent;
import android.telephony.SmsManager;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class SMSMain extends Activity {
protected EditText etPhoneNumber;
protected static EditText etMessage;
protected View dialogView;
private static final int CONTACT_PICKER_RESULT = 1001;
AlertDialog dialog;
protected static final int RESULT_SPEECH = 1;
private static SMSMain smsMain;
ArrayList<String> smsMessagesList = new ArrayList<String>();
ListView smsListView;
ArrayAdapter<String> arrayAdapter;
public static SMSMain instance() {
return smsMain;
}
@Override
public void onStart() {
super.onStart();
smsMain = this;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_smsmain);
// initialize ListView for displaying SMS messages
smsListView = (ListView) findViewById(R.id.messages_list);
arrayAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, smsMessagesList);
smsListView.setAdapter(arrayAdapter);
// long click on ListView item will delete message
smsListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int pos, long arg3) {
//removes item at position you long-click on
smsMessagesList.remove(pos);//where arg2 is position of item you click
arrayAdapter.notifyDataSetChanged();
return true;
}
});
} // end onCreate
public void readSMS(View v){
refreshSmsInbox();
}
// adds text messages to the ListView via the adapter
public void refreshSmsInbox() {
ContentResolver contentResolver = getContentResolver();
Cursor smsInboxCursor = contentResolver.query(Uri.parse
("content://sms/inbox"), null, null, null, null);
int indexBody = smsInboxCursor.getColumnIndex("body");
int indexAddress = smsInboxCursor.getColumnIndex("address");
if (indexBody < 0 || !smsInboxCursor.moveToFirst()) return;
arrayAdapter.clear();
do {
String str = "SMS From: " + smsInboxCursor.getString(indexAddress) +
"\n" + smsInboxCursor.getString(indexBody) + "\n";
arrayAdapter.add(str);
} while (smsInboxCursor.moveToNext());
}
public void updateList(final String smsMessage) {
arrayAdapter.insert(smsMessage, 0);
arrayAdapter.notifyDataSetChanged();
}
public void composeSMS(View v){
// build your dialog box
AlertDialog.Builder builder = new AlertDialog.Builder(SMSMain.this);
// Get the layout inflater & inflate the box
final LayoutInflater inflater = SMSMain.this.getLayoutInflater();
dialogView = inflater.inflate(R.layout.dialog_compose_sms, null);
builder.setView(dialogView);
// get phone number and message IDs
etPhoneNumber = (EditText)dialogView.findViewById(R.id.sms_phone);
etMessage = (EditText) dialogView.findViewById(R.id.sms_message);
builder.setTitle("Send an SMS");
builder.setPositiveButton("Send", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// Turns the entered phone number and message into String
String phoneNumber = etPhoneNumber.getText().toString().trim();
String message = etMessage.getText().toString().trim();
// error check to make sure there is input
if (phoneNumber.length() > 0 && message.length() > 0)
// sends the SMS
sendSMS(phoneNumber, message);
else
Toast.makeText(getBaseContext(),
"Please enter a phone number and message.",
Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// User cancelled the dialog
dialog.cancel();
}
});
// put all your builders in one create command
dialog = builder.create();
// show the dialog box
dialog.show();
}
// clicked the microphone button to start speech to text
public void speechToText(View v) {
Intent intent = new Intent(
RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
try {
startActivityForResult(intent, RESULT_SPEECH);
etMessage.setText("");
} catch (ActivityNotFoundException a) {
Toast t = Toast.makeText(getApplicationContext(),
"Ooopps! Your device doesn't support Speech to Text",
Toast.LENGTH_SHORT);
t.show();
}
}
// method for sending the SMS
private void sendSMS(String phoneNumber, String message)
{
PendingIntent pi = PendingIntent.getActivity(this, 0,
new Intent(this, SMSMain.class), 0);
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, pi, null);
}
public void addContact(View v) {
// add a contact. using Android's ContactPicker
Intent i = new Intent(Intent.ACTION_PICK,
ContactsContract.CommonDataKinds.Phone.CONTENT_URI);
startActivityForResult(i, CONTACT_PICKER_RESULT);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_SPEECH){
// speech to text result
switch (requestCode) {
case RESULT_SPEECH: {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> text = data
.getStringArrayListExtra
(RecognizerIntent.EXTRA_RESULTS);
etMessage.setText(text.get(0));
}
break;
}
}
} // end if
// picks a contact, puts into EditText
if (resultCode == RESULT_OK) {
switch (requestCode) {
case CONTACT_PICKER_RESULT:
Cursor cursor = null;
String phone = "";
try{
Uri result = data.getData();
// get the contact id from the URI
String id = result.getLastPathSegment();
// query for phone number
cursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone._ID + "=?",
new String[]{id}, null);
int phoneIdx = cursor.getColumnIndex(Phone.DATA);
if (cursor.moveToFirst()) {
phone = cursor.getString(phoneIdx);
}
} catch (Exception e) {
System.out.println("Getting contact failed.");
} finally {
etPhoneNumber.setText(phone, TextView.BufferType.EDITABLE);
if (phone.length() == 0) {
Toast.makeText(this, "No phone number found for contact.",
Toast.LENGTH_LONG).show();
}
if (cursor != null){
cursor.close();
}
} // end finally
break;
}
}
}
}
SMSListFragment.java
package org.azurespot.practiceapp.sms;
import org.azurespot.practiceapp.R;
import android.app.ListFragment;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.telephony.SmsMessage;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
public class SMSListFragment extends ListFragment{
public static View viewList;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Defines the XML file for the fragment
viewList = inflater.inflate(R.layout.sms_messages_fragment,
container, false);
return viewList;
}
public class SMSReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
//---get the SMS message passed in---
Bundle bundle = intent.getExtras();
SmsMessage[] messages = null;
String msgString = "";
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
messages = new SmsMessage[pdus.length];
for (int i = 0; i < messages.length; i++){
messages[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
msgString += "SMS From: " + messages[i].getOriginatingAddress();
msgString += " :";
msgString += messages[i].getMessageBody().toString();
msgString += "\n";
}
//---display the new SMS message---
SMSMain smsMain = SMSMain.instance();
smsMain.updateList(msgString);
}
}
}
}
Logcat
01-01 18:24:09.444: E/AndroidRuntime(13141): FATAL EXCEPTION: main
01-01 18:24:09.444: E/AndroidRuntime(13141): Process: org.azurespot.practiceapp, PID: 13141
01-01 18:24:09.444: E/AndroidRuntime(13141): java.lang.RuntimeException: Unable to instantiate receiver org.azurespot.practiceapp.SMSReceiver: java.lang.ClassNotFoundException: Didn't find class "org.azurespot.practiceapp.SMSReceiver" on path: DexPathList[[zip file "/data/app/org.azurespot.practiceapp-2.apk"],nativeLibraryDirectories=[/data/app-lib/org.azurespot.practiceapp-2, /vendor/lib, /system/lib]]
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2608)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.app.ActivityThread.access$1800(ActivityThread.java:173)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1379)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.os.Handler.dispatchMessage(Handler.java:102)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.os.Looper.loop(Looper.java:136)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.app.ActivityThread.main(ActivityThread.java:5579)
01-01 18:24:09.444: E/AndroidRuntime(13141): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 18:24:09.444: E/AndroidRuntime(13141): at java.lang.reflect.Method.invoke(Method.java:515)
01-01 18:24:09.444: E/AndroidRuntime(13141): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
01-01 18:24:09.444: E/AndroidRuntime(13141): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
01-01 18:24:09.444: E/AndroidRuntime(13141): at dalvik.system.NativeStart.main(Native Method)
01-01 18:24:09.444: E/AndroidRuntime(13141): Caused by: java.lang.ClassNotFoundException: Didn't find class "org.azurespot.practiceapp.SMSReceiver" on path: DexPathList[[zip file "/data/app/org.azurespot.practiceapp-2.apk"],nativeLibraryDirectories=[/data/app-lib/org.azurespot.practiceapp-2, /vendor/lib, /system/lib]]
01-01 18:24:09.444: E/AndroidRuntime(13141): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:67)
01-01 18:24:09.444: E/AndroidRuntime(13141): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
01-01 18:24:09.444: E/AndroidRuntime(13141): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
01-01 18:24:09.444: E/AndroidRuntime(13141): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2603)
01-01 18:24:09.444: E/AndroidRuntime(13141): ... 10 more
最佳答案
在清单中声明接收方时：
<receiver android:name=".SMSReceiver"
android:exported="true">
<intent-filter android:priority="999">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
.中的android:name=".SMSReceiver"将扩展为您的程序包名称。因此，您在清单中写的内容等同于<receiver android:name="org.azurespot.practiceapp.SMSReceiver"
android:exported="true">
<intent-filter android:priority="999">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
请注意，此路径与您在
SMSReceiver中定义的类SMSListFragment的路径不匹配，这是logcat错误指示的内容。您可能应该在清单中使用
android:name=".sms.SMSListFragment.SMSReceiver"。嵌套类SMSReceiver可能还需要声明为静态才能以这种方式访问。