Passing onClick parameters of btn Android

Question

Passing onClick parameters of btn Android

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#1 by (2 votes)

2

I have this class that loads a WebView with a constructor where I must pass a String that is the link to the page.

public class amazonWeb extends AppCompatActivity {

String url;

public amazonWeb(String url){

    super();
    this.url = url;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_amazon_web);

    WebView webview = new WebView(this);
    setContentView(webview);
    webview.loadUrl(url);


}
}

And I call it from here. The problem is that I can not find where I can pass the parameter:

    imgBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(v.getContext(), amazonWeb.class);
            startActivity(intent);
        }
    });

android android-intent

asked by Eduardo 31.05.2017 в 23:35

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1 answer

efficiency when displaying data with PHP SQL query WHERE primary_key = x

score 2 · Accepted Answer

You can send a bundle with data in the Intent, in this case the url of the web page:

   imgBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(v.getContext(), amazonWeb.class);
            intent.putExtra("url", "https://es.stackoverflow.com");
            startActivity(intent);
        }
    });

and in the Activity that receives it, you take it from the data it receives from the Intent, in this case I do not see the constructor necessary since you are not instantiating the Activity amazonWeb :

public class amazonWeb extends AppCompatActivity {

String url;

/*public amazonWeb(String url){

    super();
    this.url = url;
}*/

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_amazon_web);

    url = getIntent().getStringExtra("url");  //* Obtiene el valor de la url.

    WebView webview = new WebView(this);
    setContentView(webview);
    webview.loadUrl(url);


  }
}

I recommend you read:

Passing data between activities