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1 package activity.cyq.contentprovidertenderer; 2 3 import android.content.ContentProvider; 4 import android.content.ContentValues; 5 import android.content.Context; 6 import android.database.Cursor; 7 import android.database.sqlite.SQLiteDatabase; 8 import android.net.Uri; 9 10 public class MyContentProvider extends ContentProvider { 11 public static final Uri URI=Uri.parse("content://cyq.activity.MyContentProvider"); 12 private SQLiteDatabase database; 13 14 @Override 15 public boolean onCreate() { 16 database = getContext().openOrCreateDatabase("ContentProvider", Context.MODE_PRIVATE, null); 17 database.execSQL("Create Table contacts( _id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT DEFAULT NONE , cellPhotoNumber TEXT DEFAULT NONE) "); 18 return false; 19 } 20 21 @Override 22 public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) { 23 Cursor cursor = database.query("contacts", null, null, null, null, null, null); 24 return cursor; 25 } 26 27 @Override 28 public String getType(Uri uri) { 29 return null; 30 } 31 32 @Override 33 public Uri insert(Uri uri, ContentValues values) { 34 database.insert("contacts", "_id", values); 35 return null; 36 } 37 38 @Override 39 public int delete(Uri uri, String selection, String[] selectionArgs) { 40 return 0; 41 } 42 43 @Override 44 public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { 45 return 0; 46 } 47 }
package activity.cyq.contentprovidertenderer;
import android.content.ContentValues;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private EditText usernameEdit;
private EditText cellPhotoNumberEdit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
usernameEdit = (EditText) findViewById(R.id.username);
cellPhotoNumberEdit = (EditText) findViewById(R.id.cellPhotoNumber);
findViewById(R.id.add).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ContentValues values = new ContentValues();
values.put("username", usernameEdit.getText().toString());
values.put("cellPhotoNumber", cellPhotoNumberEdit.getText().toString());
getContentResolver().insert(MyContentProvider.URI, values);
Toast.makeText(MainActivity.this, "数据库创建成功", Toast.LENGTH_SHORT).show();
}
});
}
}
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原文地址：http://www.cnblogs.com/chenyangqi/p/4712297.html
