我如何从Android中的另一个活动中调用活动中的函数？

问题描述 投票：0回答：4

我在android中发送短信时遇到问题。我有两节课。其中一个是SendMessage.java，另一个是SendingSms.java，我想通过SendingSms.java文件发送我的消息，所以其中有一个sendSms类，我想在SendMessage.java文件中使用此sendSms函数，但是它不能不是。另外，我可以使用SendingSms.java中的函数，但是当我在其中编写send sms代码时，它不起作用。有什么问题吗？

这里是我的SendMessage.java中的函数

public void sendMessageButton (View view)
{
    //SendingSms send = new SendingSms();       
    if(who_detail.getText().toString().length()>0 && message_text.getText().toString().length()>0 )
    {
        sendSMS(who_detail.getText().toString(), message_text.getText().toString());

    }
    else
    {
    Toast.makeText(getApplicationContext(), R.string.sendingsms_error, Toast.LENGTH_LONG).show();
    }


}

这是我的sendinSms.java

package com.example.stildeneme;

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.telephony.SmsManager;
import android.widget.Toast;

public class SendingSms extends Activity {

     public void sendSMS(String telNo, String mesaj)
        {
            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);

            registerReceiver(new BroadcastReceiver() {

                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    // TODO Auto-generated method stub
                    switch(getResultCode())
                    {
                    case Activity.RESULT_OK:
                        Toast.makeText(getBaseContext(), "SMS Gönderildi",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));


            registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            Toast.makeText(getBaseContext(), "SMS iletildi",
                                    Toast.LENGTH_SHORT).show();
                            break;
                        case Activity.RESULT_CANCELED:
                            Toast.makeText(getBaseContext(), "SMS iletilemedi",
                                    Toast.LENGTH_SHORT).show();
                            break;
                    }
                }

            }, new IntentFilter(DELIVERED));       

            SmsManager sms = SmsManager.getDefault();
            sms.sendTextMessage(telNo, null, mesaj, sentPI, deliveredPI);

         Toast.makeText(getApplicationContext(), telNo.toString() + " - " + mesaj.toString(), Toast.LENGTH_LONG).show();
        }

}

顺便说一下，我从SendingSms类扩展了我的SendMessage类。

这是我的logcat

11-30 09:48:09.613: E/AndroidRuntime(1007): FATAL EXCEPTION: main
11-30 09:48:09.613: E/AndroidRuntime(1007): java.lang.IllegalStateException: Could not execute method of the activity
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.view.View$1.onClick(View.java:2144)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.view.View.performClick(View.java:2485)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.view.View$PerformClick.run(View.java:9080)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.os.Handler.handleCallback(Handler.java:587)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.os.Handler.dispatchMessage(Handler.java:92)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.os.Looper.loop(Looper.java:123)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.app.ActivityThread.main(ActivityThread.java:3683)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at java.lang.reflect.Method.invokeNative(Native Method)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at java.lang.reflect.Method.invoke(Method.java:507)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at dalvik.system.NativeStart.main(Native Method)
11-30 09:48:09.613: E/AndroidRuntime(1007): Caused by: java.lang.reflect.InvocationTargetException
11-30 09:48:09.613: E/AndroidRuntime(1007):     at java.lang.reflect.Method.invokeNative(Native Method)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at java.lang.reflect.Method.invoke(Method.java:507)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.view.View$1.onClick(View.java:2139)
11-30 09:48:09.613: E/AndroidRuntime(1007):     ... 11 more
11-30 09:48:09.613: E/AndroidRuntime(1007): Caused by: java.lang.SecurityException: Sending SMS message: User 10048 does not have android.permission.SEND_SMS.
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.os.Parcel.readException(Parcel.java:1322)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.os.Parcel.readException(Parcel.java:1276)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at com.android.internal.telephony.ISms$Stub$Proxy.sendText(ISms.java:369)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at android.telephony.SmsManager.sendTextMessage(SmsManager.java:87)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at com.example.stildeneme.SendingSms.sendSMS(SendingSms.java:69)
11-30 09:48:09.613: E/AndroidRuntime(1007):     at com.example.stildeneme.SendMessage.sendMessageButton(SendMessage.java:76)
11-30 09:48:09.613: E/AndroidRuntime(1007):     ... 14 more
android android-activity sendmessage
4个回答
1
投票

将方法设为要从另一个活动访问的公共静态方法。然后称它为activity1.sendsms（）;

这是方法。如果您发布代码，将为您提供更好的建议...希望对您有所帮助。

嗨，请使用以下代码。问题是您需要使用上下文。

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.os.Bundle;
import android.telephony.SmsManager;
import android.widget.Toast;

public class SendingSms extends Activity {

    static Context context;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        context=this;

    }

     public static void sendSMS(String telNo, String mesaj)
        {
            String SENT = "SMS_SENT";
            String DELIVERED = "SMS_DELIVERED";

            PendingIntent sentPI = PendingIntent.getBroadcast(context, 0, new Intent(SENT), 0);

            PendingIntent deliveredPI = PendingIntent.getBroadcast(context, 0, new Intent(DELIVERED), 0);

            context.registerReceiver(new BroadcastReceiver() {

                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    // TODO Auto-generated method stub
                    switch(getResultCode())
                    {
                    case Activity.RESULT_OK:
                        Toast.makeText(context, "SMS Gönderildi",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                         Toast.makeText(context, "Generic failure",Toast.LENGTH_SHORT).show();
                         break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                         Toast.makeText(context, "No service",Toast.LENGTH_SHORT).show();
                         break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(context, "Null PDU",Toast.LENGTH_SHORT).show();
                        break;                  
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(context, "Radio off",Toast.LENGTH_SHORT).show();
                        break;
                    }
                }
            }, new IntentFilter(SENT));


            context. registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            Toast.makeText(context, "SMS iletildi",
                                    Toast.LENGTH_SHORT).show();
                            break;
                        case Activity.RESULT_CANCELED:
                            Toast.makeText(context, "SMS iletilemedi",
                                    Toast.LENGTH_SHORT).show();
                            break;
                    }
                }

            }, new IntentFilter(DELIVERED));       

            SmsManager sms = SmsManager.getDefault();
            sms.sendTextMessage(telNo, null, mesaj, sentPI, deliveredPI);

         Toast.makeText(context, telNo.toString() + " - " + mesaj.toString(), Toast.LENGTH_LONG).show();
        }

}
2
投票

首先在sendMessage.java中初始化该类

sendinsms sm =新的sendinsms（）;

sm.sendsms（您的参数）;

1
投票

首先，您缺少一个权限：

> Caused by: java.lang.SecurityException: Sending SMS message: User
> 10048 does not have android.permission.SEND_SMS.

第二，此方法不应为static-您可能会发生内存泄漏。

如果SendMessage扩展了SendSms，则应将SendSms.sendSms方法设为公开，并且应该可以使用

您不应使用：static Context context;

context应该是普通字段。以及为什么需要它：>？您可以使用activity context

0
投票

您可以通过两种方式进行：

[1。将存在该方法的活动的上下文传递到您要调用该方法的其他活动中。

2。第二种方法是使该方法静态，然后使用带有classname的其他活动从其他方法调用该方法。运算符

例如：

Class_Name.method()

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