2014年1月9日 星期四

JAVA的JSON相關操作

JAVA的JSON相關操作


 


由於工作需要，所以找到相關的程式碼，趕緊備份下來，歡迎有興趣的同好，一起來C/P一下。


 









package com.example.framelayout_parsejson;

import android.os.Bundle;
import android.app.Activity;
import android.text.TextUtils.TruncateAt;
import android.util.Log;
import android.view.Menu;

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

///////////////////////////////////////
import android.view.View;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AbsoluteLayout;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.MediaController;
import android.widget.PopupWindow;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.VideoView;
import android.view.*;
import android.view.View.*;
import android.widget.*;
import android.view.ViewGroup.MarginLayoutParams;  
import android.app.ActionBar.LayoutParams;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.OvalShape;
public class MainActivity extends Activity {
	FrameLayout FrameLayout1;
	DisplayMetrics metrics;
	TextView TextView1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		/////////////////////////////////////////
	    requestWindowFeature(Window.FEATURE_NO_TITLE);   //全螢幕設定
	    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
	    WindowManager.LayoutParams.FLAG_FULLSCREEN);
	    metrics = new DisplayMetrics();//抓取螢幕大小
	    getWindowManager().getDefaultDisplay().getMetrics(metrics);
	    
		/////////////////////////////////////////
	    FrameLayout1 = new FrameLayout(this);
	    FrameLayout.LayoutParams lparam1 = new FrameLayout.LayoutParams(metrics.widthPixels,metrics.heightPixels);
	    FrameLayout1.setLayoutParams(lparam1);
	    this.setContentView(FrameLayout1);
	    
	    ////////////////////////////////////////
	    TextView1=new TextView(this);
	    FrameLayout.LayoutParams layoutParams_TextView = new FrameLayout.LayoutParams(metrics.widthPixels, metrics.heightPixels);
	    layoutParams_TextView.gravity = Gravity.LEFT|Gravity.TOP;
	    layoutParams_TextView.leftMargin = 0;//X
	    layoutParams_TextView.topMargin = 0;//Y	 
	    
	    TextView1.setLayoutParams(layoutParams_TextView);	
	    TextView1.setText("");

	    FrameLayout1.addView(TextView1);
		 
        try {
            JSONEncode();
            JSONDecode();
        } catch (JSONException e) {
            e.printStackTrace();
        }
	}
    private void JSONEncode() throws JSONException {
        JSONArray jsonArray = new JSONArray();
 
        for (int i = 0; i < name.length; i++) {
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("name", name[i]);
            jsonObject.put("id", id[i]);
            jsonObject.put("score", score[i]);
            jsonArray.put(jsonObject);
        }
 
        TextView1.append(jsonArray.toString());
        TextView1.append("\n");
        TextView1.append("////////////////////////\n");
        JSONString = jsonArray.toString();
    }
 
    private void JSONDecode() throws JSONException {
        JSONArray jsonArray = new JSONArray(JSONString);
        Log.i("Number of Entries", Integer.toString(jsonArray.length()));
 
        for (int i = 0; i < jsonArray.length(); i++) {
            JSONObject jsonObject = jsonArray.getJSONObject(i);
            String name = jsonObject.getString("name");
            int id = jsonObject.getInt("id");
            double score = jsonObject.getDouble("score");
            TextView1.append("name: " + name + ", id: " + id + ", score: " + score);
            TextView1.append("\n");
        }
    }
    private String JSONString;
    private static final String[] name = { "Android", "Ben", "Chris", "David", "Eric", "Frankie",
            "Gary", "Henry", "Ivan", "Joe" };
    private static final int[] id = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    private static final double[] score = { 4.8, 3.2, 2.1, 4.3, 2.0, 0.9, 1.4, 2.8, 3.4, 0.1 };
	@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;
	}

}


 


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