Androidでよく使われるコードクリップ

2973 ワード

Androidリソースファイルからファイルストリーム表示を読み込む
private void doRaw(){
	InputStream is = this.getResources().openRawResource(R.raw.ziliao);
	try{
		doRead(is);
	}catch(IOException e){
		e.printStackTrace();
	}
}
private void doRead(InputStream is) throws IOException{
	DataInputStream dis = new DataInputStream(is);
	byte[]buffer = new byte[is.available()];
	dis.readFully(buffer); 
	textView.setText(new String(buffer));
	dis.close();
	is.close();
}

//   this.getResources().openRawResource      

AndroidでのJson形式データの解析
package com.practice.json;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

public class JsonDemo extends Activity {
    /*
     *   JSON   ,str    JSON  ,       LogCat    
    */
	
	String TAG = "Json message";
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        detectJSON();
    }
    
    private void detectJSON() {
    	String str = "{"+
    	
		  "\"  \" : \"2011-06-06\","+

		  //Like   JSONObject
		  "\"Like\" : {"+
		    "\"Name\" : \"   \","+
		    "\"Height\" : \"2.11cm\","+ 
		    "\"Age\" : 35"+
		  "},"+
		
		  //LikeList      JSONObject
		  "\"LikeList\":" +
			  "{\"List\": " +
			  "["+
			  	  //    JSONObject
				  "{"+
				    "\"Name\" : \"Rose\","+
				    "\"Height\" : \"190cm\","+ 
				    "\"Age\" : 23"+
				  "},"+
				  //    JSONObject
				  "{"+
				    "\"Name\" : \"  \","+
				    "\"Height\" : \"198cm\","+ 
				    "\"Age\" : 33"+
				  "}"+
			  "]"+
		      "}"+
	      "}";
    	
    	try {
			JSONObject dataJson = new JSONObject(str);
			Log.d(TAG, dataJson.getString("  "));
			
			JSONObject nbaJson = dataJson.getJSONObject("Like");
		
			Log.d(TAG, nbaJson.getString("Name"));
			Log.d(TAG, nbaJson.getString("Height"));
			Log.d(TAG, nbaJson.get("Age").toString());
			
			JSONObject listJson = dataJson.getJSONObject("LikeList");
			JSONArray arrayJson = listJson.getJSONArray("List");
			
			for(int i=0;i<arrayJson.length();i++) {
				
				JSONObject tempJson = arrayJson.optJSONObject(i);
				
				Log.d(TAG, tempJson.getString("Name"));
				Log.d(TAG, tempJson.getString("Height"));
				Log.d(TAG, tempJson.getString("Age").toString());	
			}
			
			
		} catch (JSONException e) {
			System.out.println("Something wrong...");
			e.printStackTrace();
		}
    }
}