无法存储android设备的位置并将其存储在sqlite中
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【中文标题】无法存储android设备的位置并将其存储在sqlite中【英文标题】：Cant store the location of a android device and store it in sqlite 【发布时间】：2014-08-14 20:30:42 【问题描述】：我想存储位置并将其放入数据库中，我从这里获得了此代码。 但是应用程序停止找不到任何原因？ 我还插入了我的 API 密钥。 link to the referencing site
MainActivity.java 文件
package in.wptrafficanalyzer.locationmarkersqlite;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class LocationsDB extends SQLiteOpenHelper
/** Database name */
private static String DBNAME = "locationmarkersqlite";
/** Version number of the database */
private static int VERSION = 1;
/** Field 1 of the table locations, which is the primary key */
public static final String FIELD_ROW_ID = "_id";
/** Field 2 of the table locations, stores the latitude */
public static final String FIELD_LAT = "lat";
/** Field 3 of the table locations, stores the longitude*/
public static final String FIELD_LNG = "lng";
/** Field 4 of the table locations, stores the zoom level of map*/
public static final String FIELD_ZOOM = "zom";
/** A constant, stores the the table name */
private static final String DATABASE_TABLE = "locations";
/** An instance variable for SQLiteDatabase */
private SQLiteDatabase mDB;
/** Constructor */
public LocationsDB(Context context)
super(context, DBNAME, null, VERSION);
this.mDB = getWritableDatabase();
/** This is a callback method, invoked when the method getReadableDatabase() / getWritableDatabase() is called
* provided the database does not exists
* */
@Override
public void onCreate(SQLiteDatabase db)
String sql = "create table " + DATABASE_TABLE + " ( " +
FIELD_ROW_ID + " integer primary key autoincrement , " +
FIELD_LNG + " double , " +
FIELD_LAT + " double , " +
FIELD_ZOOM + " text " +
" ) ";
db.execSQL(sql);
/** Inserts a new location to the table locations */
public long insert(ContentValues contentValues)
long rowID = mDB.insert(DATABASE_TABLE, null, contentValues);
return rowID;
/** Deletes all locations from the table */
public int del()
int cnt = mDB.delete(DATABASE_TABLE, null , null);
return cnt;
/** Returns all the locations from the table */
public Cursor getAllLocations()
return mDB.query(DATABASE_TABLE, new String[] FIELD_ROW_ID, FIELD_LAT , FIELD_LNG, FIELD_ZOOM , null, null, null, null, null);
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
locationscontentprovider.java
package in.wptrafficanalyzer.locationmarkersqlite;
import java.sql.SQLException;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.net.Uri;
/** A custom Content Provider to do the database operations */
public class LocationsContentProvider extends ContentProvider
public static final String PROVIDER_NAME = "in.wptrafficanalyzer.locationmarkersqlite.locations";
/** A uri to do operations on locations table. A content provider is identified by its uri */
public static final Uri CONTENT_URI = Uri.parse("content://" + PROVIDER_NAME + "/locations" );
/** Constant to identify the requested operation */
private static final int LOCATIONS = 1;
private static final UriMatcher uriMatcher ;
static
uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(PROVIDER_NAME, "locations", LOCATIONS);
/** This content provider does the database operations by this object */
LocationsDB mLocationsDB;
/** A callback method which is invoked when the content provider is starting up */
@Override
public boolean onCreate()
mLocationsDB = new LocationsDB(getContext());
return true;
/** A callback method which is invoked when insert operation is requested on this content provider */
@Override
public Uri insert(Uri uri, ContentValues values)
long rowID = mLocationsDB.insert(values);
Uri _uri=null;
if(rowID>0)
_uri = ContentUris.withAppendedId(CONTENT_URI, rowID);
else
try
throw new SQLException("Failed to insert : " + uri);
catch (SQLException e)
e.printStackTrace();
return _uri;
@Override
public int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs)
// TODO Auto-generated method stub
return 0;
/** A callback method which is invoked when delete operation is requested on this content provider */
@Override
public int delete(Uri uri, String selection, String[] selectionArgs)
int cnt = 0;
cnt = mLocationsDB.del();
return cnt;
/** A callback method which is invoked by default content uri */
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)
if(uriMatcher.match(uri)==LOCATIONS)
return mLocationsDB.getAllLocations();
return null;
@Override
public String getType(Uri uri)
return null;
logcat 输出
08-15 01:29:34.509: I/ActivityThread(543): Pub in.wptrafficanalyzer.locationmarkersqlite.locations: in.wptrafficanalyzer.locationmarkersqlite.LocationsContentProvider
08-15 01:29:34.818: D/AndroidRuntime(543): Shutting down VM
08-15 01:29:34.818: W/dalvikvm(543): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
08-15 01:29:34.828: E/AndroidRuntime(543): FATAL EXCEPTION: main
08-15 01:29:34.828: E/AndroidRuntime(543): java.lang.RuntimeException: Unable to start activity ComponentInfoin.wptrafficanalyzer.locationmarkersqlite/in.wptrafficanalyzer.locationmarkersqlite.MainActivity: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread.access$600(ActivityThread.java:122)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.os.Handler.dispatchMessage(Handler.java:99)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.os.Looper.loop(Looper.java:137)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread.main(ActivityThread.java:4340)
08-15 01:29:34.828: E/AndroidRuntime(543): at java.lang.reflect.Method.invokeNative(Native Method)
08-15 01:29:34.828: E/AndroidRuntime(543): at java.lang.reflect.Method.invoke(Method.java:511)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-15 01:29:34.828: E/AndroidRuntime(543): at dalvik.system.NativeStart.main(Native Method)
08-15 01:29:34.828: E/AndroidRuntime(543): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.Activity.setContentView(Activity.java:1835)
08-15 01:29:34.828: E/AndroidRuntime(543): at in.wptrafficanalyzer.locationmarkersqlite.MainActivity.onCreate(MainActivity.java:33)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.Activity.performCreate(Activity.java:4465)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
08-15 01:29:34.828: E/AndroidRuntime(543): ... 11 more
08-15 01:29:34.828: E/AndroidRuntime(543): Caused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value. Expected 4132500 but found 0. You must have the following declaration within the <application> element: <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.common.GooglePlayServicesUtil.n(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.internal.q.v(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.internal.q.u(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.MapsInitializer.initialize(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.SupportMapFragment$b.eb(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.SupportMapFragment$b.a(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.dynamic.a.a(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.dynamic.a.onInflate(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:279)
08-15 01:29:34.828: E/AndroidRuntime(543): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
08-15 01:29:34.828: E/AndroidRuntime(543): ... 21 more
08-15 01:29:36.898: I/Process(543): Sending signal. PID: 543 SIG: 9
【问题讨论】：
错误信息告诉你你做错了什么。 【参考方案1】：阅读最底部的“由”异常以获取有关问题及其修复的有用信息：
The meta-data tag in your app's AndroidManifest.xml does not have the right value.
Expected 4132500 but found 0.
You must have the following declaration within the <application> element:
<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
（我只是添加了一些换行符以使其更具可读性。）
【讨论】：
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