Я четырнадцать и новичок в java и студии android, и я делаю простую программу, которая собирает PIN-код для подзарядки пользователя в качестве входных данных, а затем набирает его на телефон в качестве USSD , но при каждом нажатии любой кнопки на MainActivity.xml приложение выходит из строя. Эти кодыAndroid-приложение падает при нажатии кнопки в Android-студии
//MainActivity.java
package devchuks.com.rechargeyourcard;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
public void openEtisalat (View v) {
Intent intent = new Intent(this, Etisalat.class);
startActivity(intent);
}
public void openMTN (View v) {
Intent intent2 = new Intent(this, MTNactivity.class);
startActivity(intent2);
}
public void openAirtel (View v) {
Intent intent3 = new Intent(this, AirtelActivity.class);
startActivity(intent3);
}
public void openGlo (View v) {
Intent intent4 = new Intent(this, GloActivity.class);
startActivity(intent4);
}
}
}
Это XML из mainactivity
//activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="devchuks.com.rechargeyourcard.MainActivity">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="@+id/linearLayout">
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/Etisalat"
android:id="@+id/button"
android:onClick="openEtisalat"/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/MTN"
android:id="@+id/button2"
android:onClick="openMTN"/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/Airtel"
android:id="@+id/button3"
android:onClick="openAirtel"/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Glo"
android:id="@+id/button4"
android:onClick="openGlo"/>
<TextView
android:layout_width="218dp"
android:layout_height="wrap_content"
android:text="@string/copyright"
android:id="@+id/textView"
android:layout_marginRight="255dp"
android:layout_marginEnd="255dp" />
</LinearLayout>
</RelativeLayout>
это пример одного из мероприятий, которые будут открыты
//Etisalat.java
package devchuks.com.rechargeyourcard;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.View.OnClickListener;
import devchuks.com.rechargeyourcard.R;
public class Etisalat extends Activity {
private Button callBtn;
private Button dialBtn;
private EditText number;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_etisalat);
number = (EditText) findViewById(R.id.phoneNumber);
callBtn = (Button) findViewById(R.id.call);
// add PhoneStateListener for monitoring
MyPhoneListener phoneListener = new MyPhoneListener();
TelephonyManager telephonyManager =
(TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
// receive notifications of telephony state changes
telephonyManager.listen(phoneListener,PhoneStateListener.LISTEN_CALL_STATE);
callBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
// set the data
String uri = "tel:" + "*555*" + number.getText().toString() + "#";
Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri));
startActivity(callIntent);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Your call has failed...",
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
});
dialBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
String ussd = number.getText().toString();
String uri = "tel:" + "*555*" + ussd + Uri.encode("#");
Intent dialIntent = new Intent(Intent.ACTION_DIAL, Uri.parse(uri));
startActivity(dialIntent);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Your call has failed...",
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
});
}
private class MyPhoneListener extends PhoneStateListener {
private boolean onCall = false;
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
// phone ringing...
Toast.makeText(Etisalat.this, incomingNumber + " calls you",
Toast.LENGTH_LONG).show();
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
// one call exists that is dialing, active, or on hold
Toast.makeText(Etisalat.this, "on call...",
Toast.LENGTH_LONG).show();
//because user answers the incoming call
onCall = true;
break;
case TelephonyManager.CALL_STATE_IDLE:
// in initialization of the class and at the end of phone call
// detect flag from CALL_STATE_OFFHOOK
if (onCall == true) {
Toast.makeText(Etisalat.this, "restart app after call",
Toast.LENGTH_LONG).show();
// restart our application
Intent restart = getBaseContext().getPackageManager().
getLaunchIntentForPackage(getBaseContext().getPackageName());
restart.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(restart);
onCall = false;
}
break;
default:
break;
}
}
}
}
и это XML
//EtisalatActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="devchuks.com.rechargeyourcard.Etisalat">
<EditText
android:id="@+id/phoneNumber"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:hint="@string/pin"
android:ems="10"
android:inputType="phone" />
<Button
android:id="@+id/call"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/phoneNumber"
android:layout_marginTop="20dp"
android:text="@string/Recharge" />
</RelativeLayout>
Пожалуйста, помогите решить эту
Вот мой Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="devchuks.com.rechargeyourcard">
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Etisalat" />
<activity android:name=".MTNactivity" />
<activity android:name=".AirtelActivity" />
<activity android:name=".GloActivity" />
</application>
</manifest>
Использование неправильного расположения для деятельности Etisalat. изменить 'setContentView (R.layout.activity_main);' to' setContentView (R.layout.EtisalatActivity); ' –
@ ρяσѕρєяK Вторично. Отправьте его как ответ. –
Android Studio также показывает ошибку, где отображается «R.id.something» или «R.layout.something» –