我有一个从另一个Activity获得的数组。我想在当前的Activity中显示它作为CheckBox项目,然后能够检查其中一些并通过按钮单击删除。我接下来实现它:
public void addFiles()
{
LinearLayout layout = (LinearLayout) findViewById(R.id.filesList);
if(!FileManagerActivity.finalAttachFiles.isEmpty())
{
for (int i=0; i<FileManagerActivity.finalAttachFiles.size();i++)
{
View line = new View(this);
line.setLayoutParams(new LayoutParams(1, LayoutParams.MATCH_PARENT));
line.setBackgroundColor(0xAA345556);
informationView= new CheckBox(this);
informationView.setTextColor(Color.BLACK);
informationView.setTextSize(16);
informationView.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
informationView.setCompoundDrawablesWithIntrinsicBounds(R.drawable.file_icon, 0, 0, 0);
informationView.setText(FileManagerActivity.finalAttachFiles.get(i).getName().toString());
informationView.setId(i);
layout.addView(informationView, 0);
layout.addView(line, 1);
layout.postInvalidate();
}
}
}
,并在onCreate()方法中调用它。它可以成功添加。然后我得到像这样检查的项目:
btnFilesRemove.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
LinearLayout layout = (LinearLayout) findViewById(R.id.filesList);
View v = null;
for(int i=0; i<FileManagerActivity.finalAttachFiles.size(); i++) {
v = layout.getChildAt(i);
CheckBox checkBox = (CheckBox) findViewById(i);
boolean checked=checkBox.isChecked();
if (checked)
{
Log.i("was checked",checkBox.getText().toString());
ViewGroup parent = (ViewGroup) v.getParent();
parent.removeView(v);
FileManagerActivity.finalAttachFiles.remove(i);
Log.i("this is view,baby",v.toString());
}
}
}
});
但无法删除项目。我正在考虑 - 更好的是 - 以这种方式实现它,或者使用ListView可能会更高效。我的意思是创建ArrayAdapter e.t.c ..