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POCannot seem to get the buttons to open a new MapActivity
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  1. POCannot seem to get the buttons to open a new MapActivity
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    copied!<p>I've been playing around with this for some time now and am hoping that someone smarter than I will be able to help. My boss has given me an opportunity to learn to develop Android apps and I'm struggling with this one issue. I need to build several apps with multiple activities but can't seem to get past this point. I'm sure it's a problem in my coding, but with so many different ways of doing things, I'm a little confused at this point. </p> <p>I am building an app that opens a Main activity with two buttons on the page. One is the close button and works fine. I want the next button to open a mapActivity that is set to my campus' location. I am not a student working on a project I just work for a community college. ;-)</p> <p>What's really wierd is that the EXACT same google.maps code works fine by itself. I just can't get the button to open the Activity without crashing.</p> <p>Here is my manifest.xml, main.xml, my main.java, Map.java and map.xml. would you please comment and point me in the right direction?</p> <p>Thanks in advance, Dave</p> <p>here are two errors:</p> <pre><code>11-21 14:50:58.968: W/dalvikvm(437): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 11-21 14:50:58.978: E/AndroidRuntime(437): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=edu.mtsac.mapproject.MAP } </code></pre> <p>This says the Activity was not found but I can see it in my source files, and in the manifest here:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="edu.mtsac.mapproject" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="3" android:targetSdkVersion="8" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" &gt; &lt;uses-library android:name="com.google.android.maps" /&gt; &lt;activity android:label="@string/app_name" android:name=".Main" &gt; &lt;intent-filter &gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;!-- map activity --&gt; &lt;activity android:label="Map" android:name=".Map" &gt; &lt;intent-filter &gt; &lt;action android:name="edu.mtsac.mapproject.MAP" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>My Main.xml and Map.xml files are simple:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;Button android:id="@+id/mapBtn" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:text="Map" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>Map.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" &gt; &lt;com.google.android.maps.MapView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/mapView" android:layout_width="fill_parent" android:layout_height="fill_parent" android:apiKey="0jevUfyLD_b1Eikgpm_mo7KVDspzhPJdRDDaxEw" android:clickable="true" android:enabled="true" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>the Main.java</p> <pre><code>package edu.mtsac.mapproject; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class Main extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button mapBtn = (Button) findViewById(R.id.mapBtn); mapBtn.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { startActivity(new Intent(Main.this, Map.class)); } }); Button closeBtn = (Button) findViewById(R.id.closeBtn); closeBtn.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { finish(); } }); };// end onCreate() } </code></pre> <p>and lastly the Map.java</p> <pre><code>package edu.mtsac.mapproject; import android.os.Bundle; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; public class Map extends MapActivity { MapController mc; GeoPoint p; MapView mapview; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.map); mapview = (MapView) findViewById(R.id.mapView); mapview.displayZoomControls(true); mapview.setBuiltInZoomControls(true); mapview.setSatellite(true); mc = mapview.getController(); String coord[] = { "34.047517", "-117.847050" }; double lat = Double.parseDouble(coord[0]); double lng = Double.parseDouble(coord[1]); p = new GeoPoint((int) (lat * 1E6), (int) (lng * 1E6)); mc.animateTo(p); mc.setZoom(17); mapview.invalidate(); } @Override protected boolean isRouteDisplayed() { return false; } } </code></pre>
 

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