Android 如何在布局中标识视图?
我创建了一个ImageViewAndroid 如何在布局中标识视图?,android,view,android-relativelayout,Android,View,Android Relativelayout,我创建了一个ImageView ImageView\u视图; 视图组_根; public void CreateImageView(){ _root=(视图组)findViewById(R.id.root); 对于(int i=0;i
ImageView\u视图;
视图组_根;
public void CreateImageView(){
_root=(视图组)findViewById(R.id.root);
对于(int i=0;i<5;i++){
_视图=新的图像视图(该视图);
RelativeLayout.LayoutParams LayoutParams=新的RelativeLayout.LayoutParams(100100);
layoutParams.leftMargin=150;
layoutParams.topMargin=50;
_view.setLayoutParams(layoutParams);
_视图.setId(i);
_root.addView(_视图);
}
}
当我单击id=3的imageview时,应该调用Toast。我怎样才能做到这一点
当我单击imageview id=3时,将调用Toast.maketext。我如何才能做到这一点
在循环中添加如下内容:
if(i == 3) {
_view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getBaseContext(), "Message", Toast.LENGTH_LONG).show();
}
});
}
获取imageview的整数数组,如
\u view=new imageview[size]在forloop
中初始化并将标记设置为imageview,然后在处理click事件时,获取标记,如int k=(Integer)v.getTag()代码>通过这种方式,您可以精确单击视图
ImageView _view;
ViewGroup _root;
public void CreateImageView()
{
_root = (ViewGroup)findViewById(R.id.root);
_view = new ImageView[5];
for ( int i = 0; i< 5;i++)
{
_view[i] = new RadioButton(this);
_view[i].setTag(i);
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(100, 100);
layoutParams.leftMargin = 150;
layoutParams.topMargin = 50;
_view.setLayoutParams(layoutParams);
_root.addView(_view[i]);
}
}
不确定你到底想实现什么。但你可以试试下面的代码片段
ImageView imgView = (ImageView) _root.findViewById(3);
imgView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Hello World from image 3",
Toast.LENGTH_SHORT).show();
}
});
_view[j].setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub.
int k = (Integer) v.getTag();
if(k==3){
Toast.makeText(this, "Your Message", Toast.LENGTH_LONG).show();
}
}
}
ImageView imgView = (ImageView) _root.findViewById(3);
imgView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Hello World from image 3",
Toast.LENGTH_SHORT).show();
}
});