如何编写 onclick 方法从其他活动中调用活动？

Question

I am using following code to call my audio_stream activity from MainActivity by onClick method but app crash after clicking on button.

radioviewall.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
           Intent radioInt;
           radioInt = new Intent(view.getContext(), Audio_stream.class);
           startActivity(radioInt);
        }
});

Answer 1

Try this:

 private Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main4);
    button = (Button)findViewById(R.id.button7);

    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            openInsideActivity4();
        }
    });
}
public void openInsideActivity4()
{
    Intent intent = new Intent(this,InsideActivity4.class);
    startActivity(intent);
}

intent android open activity

Intent intent = new Intent(this, DisplayMessageActivity.class);
    intent.putExtra(key:,value:);
    startActivity(intent);

Source: https://www.codegrepper.com/code-examples/elixir/how+to+open+another+activity+on+button+click+in+android