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当我执行我的 android 应用程序时，我面临一个强制关闭问题。当我尝试根据从服务器收到的响应代码制作“Toast”时，我面临强制关闭错误。即使发送消息没有问题，因为消息每次都能正确传递。显示吐司时发生错误。我正在粘贴所有代码和日志消息。请帮我解决错误

原木猫

09-05 10:08:02.122: W/KeyCharacterMap(719): No keyboard for id 0
09-05 10:08:02.122: W/KeyCharacterMap(719): Using default keymap: /system/usr/keychars 
/qwerty.kcm.bin
09-05 10:08:30.392: D/dalvikvm(719): GC_EXTERNAL_ALLOC freed 228K, 53% free 2625K/5511K,   
external 2061K/2137K, paused 64ms
09-05 10:08:34.382: D/SmsResponse(719): 1
09-05 10:08:34.382: W/dalvikvm(719): threadid=9: thread exiting with uncaught exception  
(group=0x40015560)
09-05 10:08:34.412: E/AndroidRuntime(719): FATAL EXCEPTION: Thread-10
09-05 10:08:34.412: E/AndroidRuntime(719): java.lang.RuntimeException: Can't create handler  
inside thread that has not called Looper.prepare()
09-05 10:08:34.412: E/AndroidRuntime(719):  at android.os.Handler.<init>(Handler.java:121)
09-05 10:08:34.412: E/AndroidRuntime(719):  at android.widget.Toast.<init>(Toast.java:68)
09-05 10:08:34.412: E/AndroidRuntime(719):  at android.widget.Toast.makeText(Toast.java:231)
09-05 10:08:34.412: E/AndroidRuntime(719):  at 
com.bluetitan.freesms.MainActivity.sendMessage(MainActivity.java:65)
09-05 10:08:34.412: E/AndroidRuntime(719):  at 
com.bluetitan.freesms.MainActivity.run(MainActivity.java:144)

09-05 10:08:34.412: E/AndroidRuntime(719):  at java.lang.Thread.run(Thread.java:1019)
09-05 10:08:34.742: W/IInputConnectionWrapper(719): showStatusIcon on inactive InputConnection
09-05 10:08:36.142: E/WindowManager(719): Activity com.bluetitan.freesms.MainActivity has leaked 
window com.android.internal.policy.impl.PhoneWindow$DecorView@40558428 that was originally added 
here
09-05 10:08:36.142: E/WindowManager(719): android.view.WindowLeaked: Activity   
com.bluetitan.freesms.MainActivity has leaked window  
com.android.internal.policy.impl.PhoneWindow$DecorView@40558428 that was originally added here
09-05 10:08:36.142: E/WindowManager(719):   at android.view.ViewRoot.<init>(ViewRoot.java:258)
09-05 10:08:36.142: E/WindowManager(719):   at 
android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
09-05 10:08:36.142: E/WindowManager(719):   at 
android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
09-05 10:08:36.142: E/WindowManager(719):   at   
android.view.Window$LocalWindowManager.addView(Window.java:424)
09-05 10:08:36.142: E/WindowManager(719):   at android.app.Dialog.show(Dialog.java:241)
09-05 10:08:36.142: E/WindowManager(719):   at 
android.app.ProgressDialog.show(ProgressDialog.java:107)
09-05 10:08:36.142: E/WindowManager(719):   at 
android.app.ProgressDialog.show(ProgressDialog.java:90)

 09-05 10:08:36.142: E/WindowManager(719):  at 
 com.bluetitan.freesms.MainActivity.onClick(MainActivity.java:123)

 09-05 10:08:36.142: E/WindowManager(719):  at android.view.View.performClick(View.java:2485)

 09-05 10:08:36.142: E/WindowManager(719):  at android.view.View$PerformClick.run(View.java:9080)
 09-05 10:08:36.142: E/WindowManager(719):  at 
 android.os.Handler.handleCallback(Handler.java:587)
 09-05 10:08:36.142: E/WindowManager(719):  at 
 android.os.Handler.dispatchMessage(Handler.java:92)
 09-05 10:08:36.142: E/WindowManager(719):  at android.os.Looper.loop(Looper.java:123)
 09-05 10:08:36.142: E/WindowManager(719):  at   
 android.app.ActivityThread.main(ActivityThread.java:3683)
 09-05 10:08:36.142: E/WindowManager(719):  at java.lang.reflect.Method.invokeNative(Native 
 Method)
 09-05 10:08:36.142: E/WindowManager(719):  at java.lang.reflect.Method.invoke(Method.java:507)
 09-05 10:08:36.142: E/WindowManager(719):  at 
 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)

 09-05 10:08:36.142: E/WindowManager(719):  at 
 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
 09-05 10:08:36.142: E/WindowManager(719):  at dalvik.system.NativeStart.main(Native Method)

MainActivity.java

public class MainActivity extends Activity implements OnClickListener, Runnable {
Context context;

// public final static String EXTRA_NUMBER =
// "com.example.myfirstapp.NUMBER";
// public final static String EXTRA_MESSAGE =
// "com.example.myfirstapp.MESSAGE";
EditText editTextNum, editText, editUserName, editPassword;
Button btnsend;
ProgressDialog pd;
String gateway_name;
Thread t;
Spinner spinner1;
String toastMsg = "Message Sent To Server";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.activity_main);
    editUserName = (EditText) findViewById(R.id.edit_userName);
    editPassword = (EditText) findViewById(R.id.edit_password);
    editTextNum = (EditText) findViewById(R.id.edit_number);
    editText = (EditText) findViewById(R.id.edit_message);
    spinner1 = (Spinner) findViewById(R.id.SpinnerGateway);
    btnsend = (Button) findViewById(R.id.btnsend);
    btnsend.setOnClickListener(this);
}

/** Called when the user clicks the Send button */
public void sendMessage() {
    String usrname = editUserName.getText().toString();
    String usrPassword = editPassword.getText().toString();
    String number = editTextNum.getText().toString();
    String message = editText.getText().toString();
    gateway_name = String.valueOf(spinner1.getSelectedItem());
    String msgreciever = number;
    String testMessage = message;
    try {
        SmsSender.sendMessage(msgreciever, testMessage, usrname,
                usrPassword, gateway_name);
        toastMsg = SmsSender.toastText;
    } catch (Exception ex) {
        Toast.makeText(MainActivity.this, "SMS Sending Failed.",
                Toast.LENGTH_SHORT).show();
    }

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
    case R.id.menu_settings:
        settingmenuClicked();
        return true;
    case R.id.menu_help:
        showHelp();
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

public boolean isOnline() {
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
        return true;
    }
    return false;
}

public boolean isValid() {
    if (editUserName.getText().length() == 10
            && editPassword.getText().length() != 0
            && editTextNum.getText().length() == 10
            && editText.getText().length() != 0) {
        return true;
    }
    return false;
}

public void onClick(View v) {
    // TODO Auto-generated method stub
    if (v == btnsend) {
        if (!isOnline()) {
            Toast.makeText(MainActivity.this,
                    "No Internet Access..Cannot Send SMS",
                    Toast.LENGTH_SHORT).show();
        } else if (!isValid()) {
            Toast.makeText(MainActivity.this,
                    "All fields are required. Try Again.",
                    Toast.LENGTH_SHORT).show();
        } else {
            pd = ProgressDialog.show(MainActivity.this, "Free Sms",
                    "Sending SMS..Please Wait..!!", true);
            t = new Thread(this);
            t.start();
        }

    }
}

public void settingmenuClicked() {
    Toast.makeText(MainActivity.this, "Setting Menu Coming Soon",
            Toast.LENGTH_SHORT).show();
}

public void showHelp() {
    Toast.makeText(MainActivity.this, "Help Coming Soon",
            Toast.LENGTH_SHORT).show();
}

public void run() {
    // TODO Auto-generated method stub
    sendMessage();
    mHandler.sendEmptyMessage(0);
}

public Handler mHandler = new Handler(Looper.getMainLooper()) {
    @Override
    public void handleMessage(Message msg) {
        // TODO Auto-generated method stub
        super.handleMessage(msg);
        pd.dismiss();
        Toast.makeText(MainActivity.this, "Message Sent to server", Toast.LENGTH_SHORT)
                .show();
        editTextNum.setText("");
        editText.setText("");
        editTextNum.requestFocus();
    }
};
}

短信发送器.java

public class SmsSender {


static final String _url = "http://ubaid.tk/sms/sms.aspx";
static final String charset = "UTF-8";
public static String responsecode = "0";
public static Integer responseInt;
public static String toastText = "Message Sent To Server";

// to build the query string that will send the message
private static String buildRequestString(String targetPhoneNo,
        String message, String userName, String Password, String Gateway)
        throws UnsupportedEncodingException {
    String[] params = new String[5];
    params[0] = userName;
    params[1] = Password;
    params[2] = message;
    params[3] = targetPhoneNo;
    params[4] = Gateway;

    String query = String.format(
            "uid=%s&pwd=%s&msg=%s&phone=%s&provider=%s",
            URLEncoder.encode(params[0], charset),
            URLEncoder.encode(params[1], charset),
            URLEncoder.encode(params[2], charset),
            URLEncoder.encode(params[3], charset),
            URLEncoder.encode(params[4], charset));
    return query;

}

public static void sendMessage(String reciever, String message,
        String userName, String password, String Gateway) throws Exception {
    // To establish the connection and perform the post request
    URLConnection connection = new URL(_url
            + "?"
            + buildRequestString(reciever, message, userName, password,
                    Gateway)).openConnection();
    connection.setRequestProperty("Accept-Charset", charset);
    // This automatically fires the request and we can use it to determine
    // the response status
    InputStream response = connection.getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(response));
    // System.out.println(br.readLine());
    // response code = br.readLine();
    Log.d("SmsResponse", br.readLine());
    responsecode = br.readLine();
    responseInt = Integer.valueOf(responsecode).intValue();
    switch (responseInt) {
    case 1:
        toastText = "Message Sent Successfully";
        break;
    case -1:
        toastText = "Server Error";
        break;
    case -2:
        toastText = "Invalid Username";
        break;
    case -3:
        toastText = "Invalid Message Text";
        break;
    case -4:
        toastText = "Login Failed";
        break;
    case -5:
        toastText = "IP is blocked";
        break;
    default:
        toastText = "Unknown Error";
        break;
    }

    // responseInt = Integer.valueOf(br.readLine()).intValue();

}

public static void main(String[] args) throws Exception {
    // To DO
    // String testPhoneNo = "9876543210";
    // String testMessage = "Sending Messages From java is not too hard";
    // sendMessage(testPhoneNo, testMessage);
}

}
4

2 回答 2

1

您不能从该线程调用 Toast。您需要在 UI 线程上运行代码。这是解决它的最简单方法：

this.runOnUiThread(new Runnable() {
    public void run() {
        Toast.makeText(MainActivity.this, "SMS Sending Failed.",
            Toast.LENGTH_SHORT).show();

    }
});

这段代码是否也意味着我对这个问题的解决方案是正确的？如果是，请记住选择正确的答案，如果不是，请先解决该问题，然后再提出涉及相同代码的单独问题。

编辑：另外，您收到调用此 toast 消息的异常的原因是因为您在存储之前发送了响应代码。只有第一次调用readLine()才会返回响应代码。在您发送给System.out.println()which 的第一个问题中什么也没做。现在您将它发送到您的日志，以便您可以看到它，但之后它就消失了。您需要在记录之前存储它：

responsecode = br.readLine();
Log.d("SmsResponse", responsecode);
于 2012-09-05T12:48:26.640 回答
0

当我们必须执行无法在主 UI 线程上执行的繁重任务或耗时任务时使用线程，因为其他 UI 操作将占据并会给您带来错误。

所以做这样耗时的任务，比如制作网络连接或下载我们需要线程的任何文件。

但是 toast 是一个 UI 元素，它只会在主 UI 线程上执行。

于 2014-09-30T09:04:49.477 回答