Android Button的四种点击事件

  bta1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(ButtonActivity1.this, "匿名类", Toast.LENGTH_SHORT).show();
            }
        });

        bta2.setOnClickListener(new Clicker());
         public class Clicker implements View.OnClickListener {

        @Override
        public void onClick(View v) {
            Toast.makeText(ButtonActivity1.this, "内部类", Toast.LENGTH_SHORT).show();
        }
    }

第三种

因为继承了 View.OnClickListener接口，所以要重写onclick方法

  public void onClick(View v) {
        Toast.makeText(ButtonActivity1.this, "使用Activity本类", Toast.LENGTH_SHORT).show();
    }

 bta4.setOnClickListener(new OutputClick(this));

//外部类

public class OutputClick implements View.OnClickListener {
    private  Context context;
    public OutputClick(Context context){
        this.context=context;
    }

    @Override
    public void onClick(View v) {
        Toast.makeText(context , "外部类", Toast.LENGTH_SHORT).show();
    }
}