我希望将谷歌地图集成到我的应用程序中。我的程序LoggedInActivity.class如下：
package org.hos.view;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Date;
import org.hos.application.LoggedInUser;
import org.hos.controller.ImageAdapter;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.ClipData.Item;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.GridView;
import android.widget.TextView;
import android.widget.Toast;
public class LoggedInActivity extends ActionBarActivity implements OnClickListener {
Button logout;
String currentDateString;
TextView date;
GridView gridView;
ArrayList<Item> gridArray = new ArrayList<Item>();
ImageAdapter ImageAdapter;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_logged_in);
String Username = LoggedInUser.getUserId().toUpperCase();
setTitle("Hello "+Username);
currentDateString = DateFormat.getDateInstance().format(new Date());
date=(TextView) findViewById(R.id.time_date);
date.setText(currentDateString);
new Thread(new ChangeDate()).start();
GridView gridview = (GridView) findViewById(R.id.gridView1);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Toast.makeText(LoggedInActivity.this, v.getId() + position, Toast.LENGTH_SHORT).show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.logged_in, menu);
logout=(Button) findViewById(R.id.logout);
logout.setOnClickListener(this);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
else if(id == R.id.view_graph)
{
Intent intent = new Intent(this,ViewGraphActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.pull_in_right, R.anim.push_out_left);
}
return super.onOptionsItemSelected(item);
}
public void onClick(View v)
{
if(v.equals(logout))
{
Intent intent=new Intent(this,MainActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.pull_in_left, R.anim.push_out_right);
}
}
class ChangeDate implements Runnable
{
public void run()
{
while(true)
{
try {
Thread.sleep(60000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
runOnUiThread(new Runnable(){
public void run()
{
if(date.getText().toString()!=DateFormat.getDateInstance().format(new Date()))
{
date.setText(DateFormat.getDateInstance().format(new Date()));
}
} });
}
}
}
public static void testButton(Context mContext, int i)
{
if(i == 0)
{
mContext.startActivity(new Intent(mContext,ViewGraphActivity.class));
((Activity) mContext).overridePendingTransition(R.anim.pull_in_right, R.anim.push_out_left);
}
else if(i == 1)
{
mContext.startActivity(new Intent(mContext,GoogleMapsActivity.class));
((Activity) mContext).overridePendingTransition(R.anim.pull_in_right, R.anim.push_out_left);
}
else if(i == 2)
{
}
else if(i == 3)
{
mContext.startActivity(new Intent(mContext,MainActivity.class));
((Activity) mContext).overridePendingTransition(R.anim.pull_in_left, R.anim.push_out_right);
}
}
}
正如你在上一部分所见
if(i == 1)
{
"starting the googlemap activity."
}
我的googlemapactivity.class如下：
package org.hos.view;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class GoogleMapsActivity extends ActionBarActivity {
private GoogleMap googleMap;
//static final LatLng TutorialsPoint = new LatLng(21 , 57);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_google_maps);
try {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
//Marker TP = googleMap.addMarker(new MarkerOptions().position(TutorialsPoint).title("TutorialsPoint"));
//TP.showInfoWindow();
} catch (Exception e)
{
e.printStackTrace();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.google_maps, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
我的activity_goggle_maps.xml文件如下：
<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="org.hos.view.GoogleMapsActivity" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
但是，当我点击按钮打开谷歌地图时，我收到以下错误：
11-13 12:28:57.373: E/AndroidRuntime(851): FATAL EXCEPTION: main
11-13 12:28:57.373: E/AndroidRuntime(851): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.hos.view/org.hos.view.GoogleMapsActivity}: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.os.Handler.dispatchMessage(Handler.java:99)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.os.Looper.loop(Looper.java:130)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread.main(ActivityThread.java:3683)
11-13 12:28:57.373: E/AndroidRuntime(851): at java.lang.reflect.Method.invokeNative(Native Method)
11-13 12:28:57.373: E/AndroidRuntime(851): at java.lang.reflect.Method.invoke(Method.java:507)
11-13 12:28:57.373: E/AndroidRuntime(851): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
11-13 12:28:57.373: E/AndroidRuntime(851): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
11-13 12:28:57.373: E/AndroidRuntime(851): at dalvik.system.NativeStart.main(Native Method)
11-13 12:28:57.373: E/AndroidRuntime(851): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
11-13 12:28:57.373: E/AndroidRuntime(851): at org.hos.view.GoogleMapsActivity.onCreate(GoogleMapsActivity.java:21)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
11-13 12:28:57.373: E/AndroidRuntime(851): ... 11 more
11-13 12:28:57.373: E/AndroidRuntime(851): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/org.hos.view-1.apk]
11-13 12:28:57.373: E/AndroidRuntime(851): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
11-13 12:28:57.373: E/AndroidRuntime(851): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
11-13 12:28:57.373: E/AndroidRuntime(851): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.createView(LayoutInflater.java:471)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
11-13 12:28:57.373: E/AndroidRuntime(851): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
11-13 12:28:57.373: E/AndroidRuntime(851): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
11-13 12:28:57.373: E/AndroidRuntime(851): ... 20 more
任何人都可以帮助我。我想将googlemaps集成到我的应用程序中以显示设备位置。 在此先感谢。
答案 0 :(得分：0)
您正在使用ActionBarActivity，这意味着您正在使用Android支持库。因此，您必须在xml文件中使用SupportMapFragment而不是MapFragment。
只需更改此行
即可android:name="com.google.android.gms.maps.MapFragment"
到这个
android:name="com.google.android.gms.maps.SupportMapFragment"