我正在开发一个Android项目它正常工作，只需添加联系人或当我想开始一个新的活动时，但当我尝试发送短信时，它强制关闭自己。主要代码如下
package com.example.sms;
import java.util.Locale;
import java.util.StringTokenizer;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.speech.tts.TextToSpeech.OnUtteranceCompletedListener;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements TextToSpeech.OnInitListener, OnUtteranceCompletedListener, OnClickListener{
Button btnSendSMS,record_sms,finish;
EditText txtPhoneNo;
EditText txtMessage;
Button addcontact;
EditText phonePhoneno;
TextView enter_contact_no;
private TextToSpeech tts;
private static final int CONTACT_PICKER_RESULT = 1001;
private static final String DEBUG_TAG = "";
String phoneNo="";
String phonenofromcontact="";
String finallistofnumberstosendmsg ="";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
enter_contact_no=(TextView) findViewById(R.id.txtPhoneNo1);
btnSendSMS = (Button) findViewById(R.id.btnSendSMS);
// txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo);
txtMessage = (EditText) findViewById(R.id.txtMessage);
record_sms=(Button) findViewById(R.id.button1);
finish=(Button) findViewById(R.id.complete);
tts = new TextToSpeech(this, this);
record_sms.setOnClickListener(this);
finish.setOnClickListener(this);
// String str;
// Log.e("test4", "ram.......");
//Log.e("test3", "mmmmmmmmmmm...");
//tts.speak("enter contact number", TextToSpeech.QUEUE_FLUSH, null);
// str=getIntent().getExtras().getString("username");
//Log.e("message",str);
/* record_sms.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent=new Intent(MainActivity.this, MainActivity1.class);
startActivity(intent);
}
});*/
//Log.e("test2", "lllllllll...");
addcontact =(Button) findViewById(R.id.addphonenofromcontact);
/* Intent intent=new Intent(this,AndroidTextToSpeechActivity.class );
startActivity(intent);*/
speakOut("enter contact number");
addcontact.setOnClickListener(new View.OnClickListener()
{
public void onClick(View V)
{
Intent ContactPickerIntent = new Intent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);
ContactPickerIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
startActivityForResult(ContactPickerIntent, CONTACT_PICKER_RESULT);
}
}
);
btnSendSMS.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
// txtMessage.setText(getIntent().getExtras().getString("username"));
String message = txtMessage.getText().toString();
phoneNo = txtPhoneNo.getText().toString();
String phoneNo1= phonePhoneno.getText().toString();
// Sending message to both the written and added contact...
finallistofnumberstosendmsg +=phoneNo1 + phoneNo;
String phoneFinal= phoneNo + finallistofnumberstosendmsg;
//StringTokenizer st=new StringTokenizer(finallistofnumberstosendmsg,",");
StringTokenizer st=new StringTokenizer(phoneFinal,",");
while (st.hasMoreElements())
{
String tempMobileNumber = (String)st.nextElement();
if(tempMobileNumber.length()>0 && message.trim().length()>0) {
sendSMS(tempMobileNumber, message);
}
else
{
Toast.makeText(getBaseContext(),
"Please enter both phone number and message.",
Toast.LENGTH_SHORT).show();
}
}
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK)
{
switch (requestCode)
{
case CONTACT_PICKER_RESULT:
Cursor cursor=null;
try
{
Uri result = data.getData();
Log.v(DEBUG_TAG, "Got a contact result: " + result.toString());
// get the contact id from the Uri
String id = result.getLastPathSegment();
// query for everything contact number
cursor = getContentResolver().query(
Phone.CONTENT_URI, null,
Phone._ID + "=?",
new String[]{id}, null);
cursor.moveToFirst();
int phoneIdx = cursor.getColumnIndex(Phone.NUMBER);
if (cursor.moveToFirst())
{
phonenofromcontact = cursor.getString(phoneIdx);
finallistofnumberstosendmsg +=","+phonenofromcontact;
Log.v(DEBUG_TAG, "Got phone no : " + phonenofromcontact);
}
else
{
Log.w(DEBUG_TAG, "No results");
}
}
catch(Exception e)
{
Log.e(DEBUG_TAG, "Failed to get contact number", e);
}
finally
{
if (cursor != null)
{
cursor.close();
}
}
phonePhoneno= (EditText)findViewById(R.id.phonenofromcontact);
phonePhoneno.setText(finallistofnumberstosendmsg);
//phonePhoneno.setText(phonenofromcontact);
if(phonenofromcontact.length()==0)
{
Toast.makeText(this, "No contact number found for this contact",
Toast.LENGTH_LONG).show();
}
break;
}
}
else
{
Log.w(DEBUG_TAG, "Warning: activity result not ok");
}
}
private void sendSMS(String phoneNumber, String message)
{
String SENT = "SMS_SENT";
String DELIVERED = "SMS_DELIVERED";
PendingIntent sentPI = PendingIntent.getBroadcast(this, 0,
new Intent(SENT), 0);
PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
new Intent(DELIVERED), 0);
//---when the SMS has been sent---
registerReceiver(new BroadcastReceiver(){
public void onReceive(Context arg0, Intent arg1) {
switch (getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS sent",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
Toast.makeText(getBaseContext(), "Generic failure",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_NO_SERVICE:
Toast.makeText(getBaseContext(), "No service",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_NULL_PDU:
Toast.makeText(getBaseContext(), "Null PDU",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_RADIO_OFF:
Toast.makeText(getBaseContext(), "Radio off",
Toast.LENGTH_SHORT).show();
break;
}
}
},new IntentFilter(SENT));
//---when the SMS has been delivered---
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context arg0, Intent arg1) {
switch (getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS delivered",
Toast.LENGTH_SHORT).show();
break;
case Activity.RESULT_CANCELED:
Toast.makeText(getBaseContext(), "SMS not delivered",
Toast.LENGTH_SHORT).show();
break;
}
}
}, new IntentFilter(DELIVERED));
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);
}
@SuppressWarnings("deprecation")
public void onInit(int status) {
// TODO Auto-generated method stub
if (status == TextToSpeech.SUCCESS) {
int result = tts.setLanguage(Locale.US);
// tts.setPitch(5); // set pitch level
// tts.setSpeechRate(2); // set speech speed rate
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "Language is not supported");
} else {
//btnSpeak.setEnabled(true);
String text=enter_contact_no.getText().toString();
//tts.speak("enter contact number", TextToSpeech.QUEUE_FLUSH, null);
speakOut(text);
Log.e("test", "hhhhhhhhhhhhhhhhh");
/* @Deprecated int listenerResult = tts.setOnUtteranceCompletedListener(new OnUtteranceCompletedListener()
{
public void onUtteranceCompleted(String utteranceId)
{
// callWithResult.onDone(utteranceId);
Log.e("TAG2", "failed to add utterance completed listener");
}
});
if (listenerResult != TextToSpeech.SUCCESS)
{
Log.e("TAG", "failed to add utterance completed listener");
} */
Intent ContactPickerIntent = new Intent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);
ContactPickerIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
startActivityForResult(ContactPickerIntent, CONTACT_PICKER_RESULT);
}
} else {
Log.e("TTS", "Initilization Failed");
}
}
private void speakOut(String text) {
//String text = txtText.getText().toString();
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
public void onUtteranceCompleted(String utteranceId) {
// TODO Auto-generated method stub
}
public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==R.id.button1)
{
Intent intent=new Intent(MainActivity.this, MainActivity1.class);
String str=phonePhoneno.getText().toString();
intent.putExtra("phoneno", str);
startActivity(intent);
}
if(v.getId()==R.id.complete)
{
Intent intent=getIntent();
String str,str1;
str=intent.getExtras().getString("phoneno");
phonePhoneno.setText(str);
//str1=intent.getStringExtra("username");
//txtMessage.setText("str1");
}
}
/*public void onInit(int status) {
// TODO Auto-generated method stub
}*/
}
在上面的代码中发送和完成按钮导致强制关闭。我应该做些什么改变才能让app正确运行。
第二项活动的代码
package com.example.sms;
import java.util.ArrayList;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.support.v4.view.ViewGroupCompat;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity1 extends Activity implements OnClickListener {
protected static final int RESULT_SPEECH = 1;
private ImageButton btnSpeak;
private TextView txtText;
//EditText msg;
Button b;
String phoneno;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
txtText = (TextView) findViewById(R.id.txtText);
btnSpeak = (ImageButton) findViewById(R.id.btnSpeak);
// msg=(EditText) findViewById(R.id.txtMessage);
//b=(Button) findViewById(R.id.main_act);
b=(Button) findViewById(R.id.main_act);
btnSpeak.setOnClickListener(this);
b.setOnClickListener(this);
Intent intent =getIntent();
phoneno=intent.getExtras().getString("phoneno");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==R.id.btnSpeak)
{
Intent intent = new Intent(
RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US");
try {
startActivityForResult(intent, RESULT_SPEECH);
txtText.setText("");
} catch (ActivityNotFoundException a) {
Toast t = Toast.makeText(getApplicationContext(),
"Ops! Your device doesn't support Speech to Text",
Toast.LENGTH_SHORT);
t.show();
}
}
if(v.getId()==R.id.main_act)
{
String str=txtText.getText().toString();
Intent intent=new Intent(getApplicationContext(), MainActivity.class);
intent.putExtra("username",str);
intent.putExtra("phoneno", phoneno);
startActivity(intent);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case RESULT_SPEECH: {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> text = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
String text1;
text1=text.get(0);
txtText.setText(text.get(0));
/* if(text1=="call"||text1=="cal"||text1=="phone")
{
txtText.setText("call module"+text1);
}
else if(text1=="message"||text1=="massage"||text1=="sms")
{
txtText.setText("message module"+text1);
}
else
{
txtText.setText("invalid word!! please try again"+text1);
} */
// msg.setText(text1);
// Intent intent=new Intent(this, MainActivity.class);
// startActivity(intent);
}
break;
}
}
}
}
答案 0 :(得分：1)
发送...按钮导致强制关闭
在btnSendSMS的OnClickListener中，您尚未初始化txtPhoneNo，因此会抛出NullPointerException：
phoneNo = txtPhoneNo.getText().toString();
phonePhoneno也可能为空。
完成按钮导致强制关闭
此行可能会抛出NullPointerException：
str=intent.getExtras().getString("phoneno");
您不会检查Intent是否实际上有额外内容，或者Intent是否存在。
我只看了你的代码，可能还有更多的错误。 LogCat会告诉您错误发生的确切行，这是您最好的调试工具。请阅读：How to interpret Logcat