使用Android捕获任何按钮中的点击

Question

Who to capture the click of any button?

final Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
       public void onClick(View v) {
            Toast.makeText(WHKConversorActivity.this, "Hello World", Toast.LENGTH_SHORT).show();                    
       }
 });

this is a click on button1 but i need an function for all buttons :-/ . Example in javascript:

$('button').click(function(){
    alert($(this).val());
});

Thanks :)

Answer 1

If you want all your buttons to do exactly the same thing (which is unlikely) you could bind the same click listener to each button. Eg:

final Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(mGlobalClick);

final Button button2 = (Button) findViewById(R.id.button2);
button2.setOnClickListener(mGlobalClick);

... ect

OnClickListener mGlobalListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
            //Stuff
            }
};

Or if you want a each button to do something different, but still need some sort of reapeated function for each, you could put that part of the code in a seperate method and reference it in every click listener

public void GlobalStuff(){
     //Stuff
}

OnClickListener mSpecificListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
            GlobalStuff();
            //More Stuff
            }
};

Answer 2

There is no generic way like in javascript. You need to assign the click handler to all buttons individually.

Answer 3

您可以尝试覆盖Button类，并在其构造函数中调用addListener 。

Answer 4

Assuming all views in your activity are in some kind of ViewGroup, you can use this:

private void applyToAllButtons(ViewGroup viewGroup, OnClickListener listener) {
    for (int i = 0; i < viewGroup.getChildCount(); i++) {
        if (viewGroup.getChildAt(i) instanceof Button) {
            viewGroup.getChildAt(i).setOnClickListener(listener);
        }
    }
}

Then, in your onCreate(), do the following:

@Override
public void onCreate(Bundle savedInstanceState) {
    ... // old code here
    View view = findViewById(R.id.layoutRoot);
    setContentView(view);
    OnClickListener listener = new OnClickListener() {
        public void onClick(View v) {
            // Do stuff here.
        }
    };
    applyToAllButtons((ViewGroup) view, listener);
}

Answer 5

Thanks Jack... this is more useful :) less variables, less memory. The OnClickListener put before tiggers:

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        OnClickListener globalClick = new View.OnClickListener() {
            public void onClick(View v) {
                // some functions...
            }
        };

        /* Tiggers */
        findViewById(R.id.button1).setOnClickListener(globalClick);
        findViewById(R.id.button2).setOnClickListener(globalClick);
        findViewById(R.id.button3).setOnClickListener(globalClick);
        findViewById(R.id.button4).setOnClickListener(globalClick);
        findViewById(R.id.button5).setOnClickListener(globalClick);
}