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POJava Basics Help
 

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    <p>I am making an android application and i am confused in this section of the code. I am integrating bluetooth and making a call to startApp in the previous class. I want to show these buttons on the main page when startApp is called. From my understanding This is how I would go about doing this? Why Can't I do this? When i try to do this, eclipse doesn't let me. How would i change the code so that i could set up the main menu start page like shown below?</p> <p>Thanks!!</p> <pre><code>main.xml &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="@color/background" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="85dip" android:orientation="horizontal"&gt; &lt;LinearLayout android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_gravity="center" android:orientation="vertical"&gt; &lt;TextView android:text="@string/mainTitle" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="25dip" android:textSize="24.5sp"/&gt; &lt;!-- Patient Option --&gt; &lt;Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/patientButton" android:id="@+id/patientButton"&gt; &lt;/Button&gt; &lt;!-- Doctor Option --&gt; &lt;Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/doctorButton" android:layout_weight="1" android:id="@+id/doctorButton"&gt; &lt;/Button&gt; &lt;!-- Exit Mode --&gt; &lt;Button android:text="@string/exit" android:layout_weight="1" android:id="@+id/exit" android:layout_width="fill_parent" android:layout_height="wrap_content"&gt;&lt;/Button&gt; &lt;!-- About Mode --&gt; &lt;Button android:text="@string/aboutButton" android:layout_weight="1" android:id="@+id/aboutButton" android:layout_width="fill_parent" android:layout_height="wrap_content"&gt;&lt;/Button&gt; &lt;/LinearLayout&gt; &lt;/LinearLayout&gt; package com.joshi.remotedoc; import com.joshi.remotedoc.DeviceList; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.TextView; import android.widget.Toast; public class Remote_DocActivity extends Activity implements OnClickListener { /** Called when the activity is first created. */ //private static final String TAG = "Remote_Doc"; private static final String TAG = "BluetoothChat"; private static final boolean D = true; private static final int REQUEST_CONNECT_DEVICE_SECURE = 1; private static final int REQUEST_CONNECT_DEVICE_INSECURE = 2; private static final int REQUEST_ENABLE_BT = 3; private BluetoothAdapter mBluetoothAdapter = null; private String mConnectedDeviceName = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if(D) Log.e(TAG, "+++ ON CREATE +++"); setContentView(R.layout.main); mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (mBluetoothAdapter == null) { Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show(); finish(); return; } } @Override public void onStart() { super.onStart(); if(D) Log.e(TAG, "++ ON START ++"); // If BT is not on, request that it be enabled. if (!mBluetoothAdapter.isEnabled()) { Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); } else { startApp(); } } private void ensureDiscoverable() { if(D) Log.d(TAG, "ensure discoverable"); if (mBluetoothAdapter.getScanMode() != BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) { Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); startActivity(discoverableIntent); } } private void startApp(){ View Patient_Button = findViewById(R.id.patientButton); Patient_Button.setOnClickListener(this); Patient_Button.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent b = new Intent(this, Detailed_ModeActivity.class); startActivity(b); break; } } ); View Doctor_Button = findViewById(R.id.doctorButton); Doctor_Button.setOnClickListener(this); View About_Option = findViewById(R.id.aboutButton); About_Option.setOnClickListener(this); View Exit_Option = findViewById(R.id.exit); Exit_Option.setOnClickListener(this); } /*private final Handler mHandler = new Handler() { @Override public void handleData(Data data) { } }*/ private void connectDevice(Intent data, boolean secure) { // Get the device MAC address String address = data.getExtras() .getString(DeviceList.EXTRA_DEVICE_ADDRESS); // Get the BluetoothDevice object BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // Attempt to connect to the device //mChatService.connect(device, secure); } public void onClick(View v) { switch (v.getId()) { case R.id.patientButton: Intent b = new Intent(this, Detailed_ModeActivity.class); startActivity(b); break; case R.id.doctorButton: Intent a = new Intent(this, Detailed_ModeActivity.class); startActivity(a); break; case R.id.aboutButton: Intent i = new Intent(this, About.class); startActivity(i); break; case R.id.exit: finish(); break; } } } </code></pre>
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    2. COThe main xml is above
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