Java中没有XML的java中的可单击图像按钮

Question

I want to make image button in java class without using XML(dynamic UI).

I can make this but I can't connect to onClick void.

Can anybody help me?

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // setContentView(R.layout.main);
    LayoutParams params =
            new TableRow.LayoutParams(
                    LayoutParams.FILL_PARENT,
                    LayoutParams.WRAP_CONTENT);

    TableRow table = new TableRow(this);
    table.setOrientation(TableRow.VERTICAL);


    ImageButton ib = new ImageButton(this);
    ib.setImageResource(R.drawable.one);
    ib.setLayoutParams(params);
    table.addView(ib);

    TableRow.LayoutParams layoutParams=
            new TableRow.LayoutParams(
                    LayoutParams.FILL_PARENT,
                    LayoutParams.WRAP_CONTENT );
    this.addContentView(table, layoutParams);

}
public void onClick(View v){

    Toast.makeText(getBaseContext(),"This button clicked",Toast.LENGTH_SHORT).show();


}

Answer 1

you missed ib.setOnClickListener(...); . If your activity implements View.OnClickListener then it would be

ib.setOnClickListener(this);

Answer 2

You need to assign OnClickListener before using it

If you are implementing OnClickListener in the activity then use (I believe you are because you have onClick method defined)

ib.setOnClickListener(this);

If not then do this

ib.setOnClickListener(new View.OnClickListener()
{
    public void onClick(){
        // Do as required
    }
});