how to solve out out of memory exception error for android in eclipse

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Mobile

Android

i am getting Throwing OutOfMemoryError while running all my applications. i get this error when i import a jar file "android-async-http-1.3.1.jar". the code i used for the application is as follows

public void onClick(View v) {
				// TODO Auto-generated method stub
				String iGTIN=et.getText().toString();
				RequestParams params=new RequestParams();
				params.put("iGTIN", iGTIN);
				fetchSEcondary(params); 
			}
		});
		
	}

	public void fetchSEcondary(RequestParams params) {
		// TODO Auto-generated method stub
		AsyncHttpClient fetchSecond=new AsyncHttpClient();
		fetchSecond.put("http://pharmamax.solutionsmax.com/PackageMax.svc/FetchSecondaryNumber", params,new AsyncHttpResponseHandler(){
		
			public void onSuccess(String response){
				Toast.makeText(getApplicationContext(), response, Toast.LENGTH_SHORT).show();
			try{
				JSONObject obj3 = new JSONObject(response);
				JSONArray jsonArray3 = obj3.getJSONArray("FetchSecondaryNumberResult");
			    int length = jsonArray3.length();
			    if(length!=0)
			    {
			    	for(int i=0;i<length;i++)
			    	{
			    		JSONObject user = jsonArray3.getJSONObject(i);
			    		 //result=user3.getString("Res").toString();
			    		 number.setText(user.get("Res").toString());
			    	}
			     }
			     else
			     {
			    	 Toast.makeText(getApplicationContext(), "no data", Toast.LENGTH_LONG).show();
			     }
			}catch(JSONException e){
				Toast.makeText(getApplicationContext(), "Exception", Toast.LENGTH_LONG).show();
				//e.printStackTrace();
			}
			
			}
			
			public void onFailure(int statusCode, Throwable error,String content){
				 if(statusCode == 404){
                  Toast.makeText(getApplicationContext(), "Requested resource not found", Toast.LENGTH_LONG).show();
              } 
				 else if(statusCode == 500){
                  Toast.makeText(getApplicationContext(), "Something went wrong at server end", Toast.LENGTH_LONG).show();
              }
				 else{
                  Toast.makeText(getApplicationContext(), "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]", Toast.LENGTH_LONG).show();
              }
			 }
		});

i am not able to find out what triggers this error. please help me to solve this