ContentProviderのサンプル

MainActivity.java

package com.example.contentprovidersample;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		String[] projection = new String[]{
			MediaStore.MediaColumns.TITLE,
			MediaStore.MediaColumns.DATA,
		};
//		ContactsContract.CommonDataKinds.Phone.CONTENT_URI
		Cursor cursor = getContentResolver().query(
				MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
				projection, 
				null/*絞込パラメータ*/, 
				null/*絞込データ*/, 
				null/*並び替え*/);
		
		if(cursor != null && 0 < cursor.getCount()){
			cursor.moveToFirst();//あってもなくてもいい
			
			int titleIndex = cursor.getColumnIndex(MediaStore.MediaColumns.TITLE);
			int pathIndex = cursor.getColumnIndex(MediaStore.MediaColumns.DATA);
			
			do{
				Log.i("contentprovider", "title:"+cursor.getString(titleIndex));
				Log.i("contentprovider", "path:"+cursor.getString(pathIndex));
			}while(cursor.moveToNext());
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}