使用ContentProvider_20130223

package com.example.booksystem_testcontentprovider_20130223;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class TestContentProviderActivity extends Activity { 
 private ContentResolver myContentResolver;
 //建立好用來連結的URI物件，內容就是ContentProvider中的Authority+TableName
 private Uri myUri=Uri.parse("content://tw.com.jimbo.FindBook/BooksInfo");
 private Button btn1;
 private TextView tv1;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_test_content_provider);
  //在onCreate()階段取得ContentProvider實體
  myContentResolver=getContentResolver();
  findView();
  
  btn1.setOnClickListener(new View.OnClickListener() {
   
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    //呼叫query方法回傳Cursor物件
    Cursor myCursor=myContentResolver.query(myUri, null, null, null, null);
    if(myCursor != null && myCursor.getCount() > 0){
     tv1.setText("");
     while(myCursor.moveToNext()){
      String isbn=myCursor.getString(1);
      String bookName=myCursor.getString(2);
      String author=myCursor.getString(3);
      tv1.append(isbn+"|"+bookName+"|"+author+"\n");
     }
    }
   }
  });
 }
 
 private void findView(){
  btn1=(Button)findViewById(R.id.button1);
  tv1=(TextView)findViewById(R.id.textView1);
 }

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

}