Webservice is a library project which contains CURD operation implementations and utilities based on Android's Volley library.
You can just add the dependency like below
dependencies {
implementation 'com.android.volley:volley:1.1.1'
}
- Insert data
- Fetch data and show in listview
- Update
- Delete
- Insert=https://appd2u.000webhostapp.com/insert.php
- Fetch=https://appd2u.000webhostapp.com/fetch.php
- Update=https://appd2u.000webhostapp.com/update.php
- Delete=https://appd2u.000webhostapp.com/delete.php
On application startup you need to set the api
String geturl="https://appd2u.000webhostapp.com/fetch.php";
String seturl="https://appd2u.000webhostapp.com/insert.php";
String updateurl="https://appd2u.000webhostapp.com/update.php";
String deleteurl="https://appd2u.000webhostapp.com/delete.php";
final ProgressDialog pd=new ProgressDialog(MainActivity.this);//create object of progress Dialog and pass this calss
pd.setMessage("Please Wait"); //set message
pd.show();//show it
//craete object of StringRequest and pass 4 parameter
//1=define method which u used post/get
//2=uri
//3=response listener
//4=error listener
StringRequest myrequest=new StringRequest(Request.Method.POST, seturl, new Response.Listener<String>() //3=respone listener it told what server respone
{
@Override
public void onResponse(String response)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+response, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() //4=error listener if any error come in server it told
{
@Override
public void onErrorResponse(VolleyError error)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+error.getMessage(), Toast.LENGTH_SHORT).show();
}
})
//init block and overide params method through this data goes to server
{
@Override
protected Map<String, String> getParams() throws AuthFailureError
{
Map<String,String> mymap=new HashMap<String, String>(); //object hashmap
mymap.put("name",ename.getText().toString()); //sent data
mymap.put("salary",esalary.getText().toString());
mymap.put("phone",ephone.getText().toString());
return mymap; //return my map
}
};
requestQueue.add(myrequest); //send request to server
final ProgressDialog pd=new ProgressDialog(MainActivity.this);//create object of progress Dialog and pass this calss
pd.setMessage("Please Wait"); //set message
pd.show();//show it
StringRequest myrequest=new StringRequest(Request.Method.POST, geturl, new Response.Listener<String>() {
@Override
public void onResponse(String response)
{
pd.dismiss();
ArrayList arrayList=new ArrayList();
try {
JSONObject jsonObject=new JSONObject(response); //create json object and pass response it get json object from database
JSONArray jsonArray= jsonObject.getJSONArray("result"); //through json object called json array and pass array name which is declare in php code
for (int i=0;i<jsonArray.length();i++)
{
JSONObject jobj=jsonArray.getJSONObject(i);//through json array called json objet pass index(i) it get all json index value
int id=jobj.getInt("id"); //it get id & store in int
String name=jobj.getString("name"); //it get name
int salary=jobj.getInt("salary"); //it get salary
String phone=jobj.getString("phone");//it get phone
arrayList.add(id+"\n"+name+"\n"+salary+"\n"+phone+"\n");
//Toast.makeText(MainActivity.this, ""+id+name+salary+phone, Toast.LENGTH_SHORT).show();
}
}catch(Exception e)
{}
ArrayAdapter<ArrayList> adapter=new ArrayAdapter<ArrayList>(MainActivity.this,android.R.layout.simple_list_item_1,arrayList);
lv.setAdapter(adapter);
}
},new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
requestQueue.add(myrequest);
final ProgressDialog pd=new ProgressDialog(MainActivity.this);//create object of progress Dialog and pass this calss
pd.setMessage("Please Wait"); //set message
pd.show();//show it
//craete object of StringRequest and pass 4 parameter
//1=define method which u used post/get
//2=uri
StringRequest myrequest=new StringRequest(Request.Method.POST, updateurl, new Response.Listener<String>() //3=respone listener it told what server respone
{
@Override
public void onResponse(String response)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+response, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() //4=error listener if any error come in server it told
{
@Override
public void onErrorResponse(VolleyError error)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+error.getMessage(), Toast.LENGTH_SHORT).show();
}
})
//init block and overide params method through this data goes to server
{
@Override
protected Map<String, String> getParams() throws AuthFailureError
{
Map<String,String> mymap=new HashMap<String, String>(); //object hashmap
mymap.put("salary",esalary.getText().toString());
mymap.put("phone",ephone.getText().toString());
return mymap; //return my map
}
};
requestQueue.add(myrequest); //send request to server
final ProgressDialog pd=new ProgressDialog(MainActivity.this);//create object of progress Dialog and pass this calss pd.setMessage("Please Wait"); //set message pd.show();//show it
StringRequest myrequest=new StringRequest(Request.Method.POST, deleteurl, new Response.Listener<String>() {
@Override
public void onResponse(String response)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+response, Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error)
{
pd.dismiss();
Toast.makeText(MainActivity.this, ""+error.getMessage(), Toast.LENGTH_SHORT).show();
}
})
{
@Override
protected Map<String, String> getParams() throws AuthFailureError
{
Map<String,String> mymap=new HashMap<String, String>(); //object hashmap
mymap.put("phone",ephone.getText().toString());
return mymap; //return my map
}
};
requestQueue.add(myrequest);
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