【发布时间】:2014-04-17 12:09:52
【问题描述】:
在 main2.xml 中显然没有错误。 main.xml 也是如此,但我认为问题出在某个地方。
该应用程序的快速摘要:它旨在使用 Google Maps onClick 一个按钮,但我遇到了错误,因此我可以在测试时加载主菜单。
XML
我没有足够的代表来发布图片,所以可以找到错误图片here
main2.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"/>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Club Deals"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="GPS locations" />
<Button
android:id="@+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Closest Deals"
android:onClick="open_close_deals" />
<Button
android:id="@+id/button6"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Cheapest Deals"
android:onClick="open_cheap_deals" />
<Button
android:id="@+id/button7"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Best Value Deals"
android:onClick="best_value" />
<Button
android:id="@+id/button8"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Best Events"
android:onClick="best_events" />
<Button
android:id="@+id/button9"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="News"
android:onClick="news"/>
</LinearLayout>
AppActivity.java
在 AppActivity 中给我 "map 无法解析或不是字段" & "main2 无法解析或不是字段"
package com.example.clubnightsdeals;
import android.R;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
public class AppActivity extends Activity {
Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// addListenerOnButton();
}
public void addListenerOnButton() {
final Context context = this;
button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(getApplicationContext(), App2Activity.class);
startActivity(intent);
}
});
};
public void addListenerOnButtonNews() {
final Context context = this;
button = (Button) findViewById(R.id.button9);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(getApplicationContext(), App2Activity.class);
startActivity(intent);
}
});
};
/* protected void onCreate1(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
}
*/
// Google Map
GoogleMap googleMap;
protected void onCreate1(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
try {
// Loading map
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* function to load map. If map is not created it will create it for you
* */
private void initilizeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(
R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
@Override
protected void onResume() {
super.onResume();
initilizeMap();
}
}
在 App2Activity 中我收到错误 “无法解析导入 com.example.clubnightsdeals.R”
App2Activity.java
package com.example.clubnightsdeals;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import com.example.clubnightsdeals.R;
public class App2Activity extends Activity {
Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
}
}
清单:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.clubnightsdeals"
android:versionCode="1"
android:versionName="1.0" >
<permission
android:name="info.androidhive.googlemapsv2.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-sdk
android:minSdkVersion="12"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- Required to show current location -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- Required OpenGL ES 2.0. for Maps V2 -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/clubnightsdeals"
android:name=".AppActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-library
android:name="com.google.android.maps" />
<activity
android:label="@string/clubnightsdeals"
android:name=".App2Activity" >
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDetfYqNFORnvtR245fht3RIK25T6DRY" />
<activity
android:name="info.androidhive.googlemapsv2.MainActivity"
android:label="@string/app_name"
android:theme="@style/AppBaseTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
【问题讨论】:
-
你必须在你的活动中
import com.example.clubnightsdeals.R; -
尝试在
main2.xml中将fragment放入FrameLayout或将片段的类设置为SupportMapFragment。 -
您的最低 api 级别是多少?
标签: java android xml eclipse google-maps