如何取消选择所有的复选框 [英] how to unselect all my checkbox

问题描述

我想没有成功取消选择所有的复选框选秀权

I'm trying without success to unselect all my checkbox picks

由pressing任何按钮，在我的Java这个code Android程序

by pressing any button that in my java android program with this code

public void onListItemClick(ListView parent, View v, int position, long id)
 {
        parent.setItemChecked(position, parent.isItemChecked(position));
 }


 @Override
 protected  Dialog onCreateDialog(int id, Bundle args){
    switch(id){
    case 1:
        return new AlertDialog.Builder(this)
        .setIcon(R.drawable.ic_launcher)
        .setTitle("This is a dialog with some simple text...")
        .setPositiveButton("OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton)
            {
                Toast.makeText(getBaseContext(),"OK clicked!", Toast.LENGTH_SHORT).show();
            }})

        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton)
            {
                Toast.makeText(getBaseContext(),"Cancel clicked!", Toast.LENGTH_SHORT).show();
            }
            })

        .setMultiChoiceItems(items, itemsChecked, new DialogInterface.OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                Toast.makeText(getBaseContext(),items[which] + (isChecked ? " checked!":" unchecked!"),Toast.LENGTH_SHORT).show();
            }
            })
        .create();
        }
        return(null);
    }

如何选择所有，并取消选择所有？

how to select all and unselect all ?

推荐答案

嗯，我最好的猜测是保存所有这些名单上的参考，并经过所有这些选择或取消选择他们所有。事情是这样的。

Well, my best guess is to save a reference for all of them on a list, and go through all of them selecting or unselecting them all. Something like this.

克里特岛的引用，保存所有复选框

Crete a reference to hold all your checkboxes

List<CheckBox> myCheckBoxes = new ArrayList<CheckBox>();
myCheckBoxes.add(cb1);
myCheckBoxes.add(cb2);
myCheckBoxes.add(cb3);
....

创建，将让你想上的复选框，设置并调用它，只要你想要的值的方法。

Create a method that will get the value you want to set on the check boxes and call it whenever you want. :

private checkAll(boolean value) {
    for(CheckBox cb : myCheckBoxes) {
        cb.setChecked(value);
    }
}

创建两个按钮：

Create two buttons:

Button unselectAllButton = (Button) findViewById(R.id.unCheckButton);
Button selectAllButton = (Button) findViewById(R.id.checkButton);

unselectAllButton.setOnClickListener(setOnClickListener(new OnClickListener() {
   public void onClick(View v) {
       checkAll(false); 
   }
});

selectAllButton.setOnClickListener(setOnClickListener(new OnClickListener() {
   public void onClick(View v) {
       checkAll(true); 
   }
});

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