动态改变Android控件大小

Button button = (Button) findViewById(R.id.button2);
button.setOnClickListener(myOnClickListener);

//手动增加代码开始
private View.OnClickListener myOnClickListener = new View.OnClickListener() {
    public void onClick(View v) {
        Button pButton = (Button) findViewById(R.id.button2);
        LinearLayout.LayoutParams linearParams = (LinearLayout.LayoutParams) pButton.getLayoutParams();
        // 取控件aaa当前的布局参数
        linearParams.height = 150;        // 当控件的高强制设成150象素
        linearParams.weight = 300;
        pButton.setLayoutParams(linearParams); // 使设置好的布局参数应用到控件

    }
};