Question

I want my activity to pass a value to another activity class that extends view. Can you please tell me a solution? I am new to Android Programming.

Answer 1

更有想法。

class CustomView extends View{
 YourData data;
public CustomView(YourData data, Context context){
this.data = data

}

}

以及活动

new CustomView(data. this)

Answer 2

pass throgh constructor or getter/seller . nothing related to android . use standard java tequnique to pass data to object .

Answer 3

您可以这样做,因为意图被用于在活动、接收器和服务之间实现统一。

Answer 4

你们可以把活动引向来看待和利用,以获得适当的价值。

class MyActivity extends Activity {
    MyView v;
    int i;
    public void onCreate(){
         v = new MyView(this);
    }

} 

class MyView extends View {
    MyActivity activity;
    public MyView(MyActivity act) {
        this.activity = act;
    }

    public void someMethod() {
        int valueFromActivity = activity.i;
    }
}

Answer 5

In the main class (A.java)

  Intent i = new Intent(A.this,B.class);
                i.putExtra("val", the value that you want to pass);
                startActivity(i);

页: 1

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 setContentView(R.layout.main2);
 Integer number = getIntent().getIntExtra("val", 0);

我们将在上获得通行证。

友情链接