Question

我想以编程方式创建多个ImageButtons。我可以创建它们但是click事件监听器不断接收相同的视图（按钮2），无论我是否单击按钮0，按钮1或按钮2。

    RelativeLayout gameBoard = (RelativeLayout) findViewById(R.id.RelGameboard);

    RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    lp.addRule(RelativeLayout.CENTER_IN_PARENT,1);

    for(int i = 0 ; i <  3 ; i++)
    {

        ImageButton btnGreen = new ImageButton(this);
        btnGreen.setImageResource(R.drawable.bola_verde);
        btnGreen.setLayoutParams(lp);
        btnGreen.setOnClickListener(mGreenBallOnClickListener);
        btnGreen.setBackgroundColor(Color.TRANSPARENT); 
        btnGreen.setTag(i);
        btnGreen.setId(i);

                    gameBoard.addView(btnGreen);


     }'

点击事件监听器：

private View.OnClickListener mGreenBallOnClickListener = new View.OnClickListener() {

    @Override
    public void onClick(View v) {

        //check which green ball was clicked
        ImageButton imgBtn = (ImageButton) v;

    Log.i("greeny","Clicked on green ball->"+imgBtn.getTag()+" v.ID->"+v.getId());
    }
};

对于任何绘制的图像按钮，当我点击时我得到：点击绿球 - ＆gt; 2 v.ID-＆gt; 2

按钮位于不同的位置（我为每个按钮设置了不同的填充，但为了简化代码，我没有把它放在这里）

Answer 1

尝试添加onClickListener -

private View.OnClickListener ClickListener = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        int selected_item = (Integer) v.getTag();
    }
};

修改

尝试创建 ImageButtons -
的数组
ImageButton[] btnGreen = new ImageButton[3]; for (int i = 0; i < 3; i++) { btnGreen[i] = new ImageButton(this); btnGreen[i].setImageResource(R.drawable.bola_verde); btnGreen[i].setLayoutParams(lp); btnGreen[i].setOnClickListener(ClickListener); btnGreen[i].setBackgroundColor(Color.TRANSPARENT); btnGreen[i].setTag(i); btnGreen[i].setId(i); gameBoard.addView(btnGreen[i]); }

Answer 2

这是因为你没有在同一个地方设置按钮，所有按钮的布局。

Use Aboveof,Belowof,left,right,center

Example

params.addRule(RelativeLayout.ALIGN_PARENT_ABOVE);  
    relativeLayout.addView(button, params);

Answer 3

试试这段代码：

RelativeLayout gameBoard = (RelativeLayout)findViewById(R.id.RelGameboard);

ImageButton[] imageButtons;

private final int NUMBER_OF_IMAGE_BUTTONS = 5; //your number of image buttons

RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

lp.addRule(RelativeLayout.CENTER_IN_PARENT,1);

imageButtons = new ImageButton[NUMBER_OF_IMAGE_BUTTONS];

for(int i = 0 ; i < NUMBER_OF_IMAGE_BUTTONS; i++){
   imageButtons[i] = new ImageButton(this);
   imageButtons[i].setImageResource(R.drawable.bola_verde);
   imageButtons[i].setLayoutParams(lp);
   imageButtons[i].setOnClickListener(mGreenBallOnClickListener);
   imageButtons[i].setBackgroundColor(Color.TRANSPARENT); 
   imageButtons[i].setTag(i);
   imageButtons[i].setId(i);
   gameBoard.addView(imageButtons[i]);
}

以编程方式创建Imagebutton

3 个答案: