内容提供者ContentProvider

1. 首先在需要提供内容提供者的应用中添加内容提供者的代码
2. package com.example.sqllite;
3. import com.example.sqllite.servise.DBOpenHelp;
4. import android.content.ContentProvider;
5. import android.content.ContentUris;
6. import android.content.ContentValues;
7. import android.content.UriMatcher;
8. import android.database.Cursor;
9. import android.database.sqlite.SQLiteDatabase;
10. import android.net.Uri;
11. public class personProvider extends ContentProvider {
12. private DBOpenHelp dbOpenHelp;
13. //Uri匹配器，检验是否匹配
14. private static final UriMatcher MATCHER=new UriMatcher(UriMatcher.NO_MATCH);
15. private static final int SUCCESS=1;
16. static {
17. MATCHER.addURI("com.contentProvide.providers.personProvides", "person", SUCCESS);
18. }
19. @Override
20. public boolean onCreate() {
21. dbOpenHelp=new DBOpenHelp(this.getContext());
22. return true;
23. }
24. @Override
25. public int delete(Uri uri, String selection, String[] selectionArgs) {
26. // TODO Auto-generated method stub
27. return 0;
28. }
29. @Override
30. public String getType(Uri uri) {
31. // TODO Auto-generated method stub
32. return null;
33. }
34. @Override
35. public Uri insert(Uri uri, ContentValues values) {
36. SQLiteDatabase db=dbOpenHelp.getWritableDatabase();
37. switch (MATCHER.match(uri)) {
38. case SUCCESS:
39. long rowID=db.insert("person", "name", values);
40. //Uri insertUri=Uri.parse("content://com.contentProvide.providers.personProvides/person/"+rowID);
41. Uri insertUri=ContentUris.withAppendedId(uri, rowID);
42. db.close();
43. return insertUri;
44. default:
45. throw new IllegalArgumentException("未知的Uir");
46. }
47. }
48. @Override
49. public Cursor query(Uri uri, String[] projection, String selection,
50. String[] selectionArgs, String sortOrder) {
51. // TODO Auto-generated method stub
52. return null;
53. }
54. @Override
55. public int update(Uri uri, ContentValues values, String selection,
56. String[] selectionArgs) {
57. // TODO Auto-generated method stub
58. return 0;
59. }
60. }

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.sqllite"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="18" />

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.example.sqllite.MainActivity"

android:label="@string/app_name" >

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

<!--  添加内容提供者的配置 -->

<provider android:name=".personProvider" android:authorities="com.contentProvide.providers.personProvides"/>

</application>

</manifest>

Uri uri=Uri.parse("content://com.contentProvide.providers.personProvides/person");

//访问contentProvider的帮助类

ContentResolver resolver=this.getApplicationContext().getContentResolver();

ContentValues values=new ContentValues();

values.put("name", "hahha");

values.put("age", 33);

values.put("amount", "123");

resolver.insert(uri, values);