实现自定义checkbox listview的方法

1。方法一：利用adapter这种方法的原理

破坏view的重用，使用List保存checkchange状态，然后在bindview中添加根据list的状态修改checkbox的勾。

注意mCheckItemView.mCheckBox.setOnCheckedChangeListener(null);修改前屏蔽事件

package com.handcent.im.adapter;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.CursorAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.handcent.im.ui.R;

public class CheckedCursorAdapter extends CursorAdapter {
private List<Integer> mCheckedList;

public CheckedCursorAdapter(Context context, Cursor c) {
super(context, c);

mCheckedList = new ArrayList<Integer>();
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
System.out.println("bind");
CheckItemView mCheckItemView = new CheckItemView();
mCheckItemView.mHeadView = (ImageView) view.findViewById(R.id.ci_img_head);
mCheckItemView.mNickName = (TextView) view.findViewById(R.id.ci_txt_name);
mCheckItemView.mSignature = (TextView) view.findViewById(R.id.ci_txt_signure);
mCheckItemView.mCheckBox = (CheckBox) view.findViewById(R.id.ci_chk_choose);
// mCheckItemView.mCheckBox.setTag(cursor.getInt(0));
for (int i : mCheckedList) {
System.out.println("checkLIst:" + i);
}
mCheckItemView.mCheckBox.setOnCheckedChangeListener(null);
if (mCheckedList.contains(cursor.getInt(0))) {
mCheckItemView.mCheckBox.setChecked(true);
} else {
mCheckItemView.mCheckBox.setChecked(false);
}
mCheckItemView.mCheckBox.setTag(cursor.getInt(0));
mCheckItemView.mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// checkbox更改状态
Integer index = (Integer) buttonView.getTag();
if (isChecked) {
if (!mCheckedList.contains(index))
mCheckedList.add(index);
} else {
mCheckedList.remove(index);
}

}
});

mCheckItemView.mNickName.setText(cursor.getString(1));
mCheckItemView.mSignature.setText(cursor.getString(2));
// int tag = (Integer) mCheckItemView.mCheckBox.getTag();

}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater mInflater = LayoutInflater.from(context);
View mView = mInflater.inflate(R.layout.contactitem, null);

return mView;
}

private class CheckItemView {
private ImageView mHeadView;
private TextView mNickName;
private TextView mSignature;
private CheckBox mCheckBox;
}

}

 

2。方法二：使用CheckedTextView

原理：自定义一个继承Checkable的Linearlayout或者RelativeLayout，在其中放置一个CheckedTextView不使用TextView的值而达到效果

package com.handcent.im.ui.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Checkable;
import android.widget.CheckedTextView;
import android.widget.RelativeLayout;

/**
* custom view extends {@link RelativeLayout} and implements {@link Checkable}
* to response the action CheckBox
*
* @author Pandans
*
*/
public class ChkRelativeLayout extends RelativeLayout implements Checkable {

private CheckedTextView _checkbox;

public ChkRelativeLayout(Context context) {
super(context);
}

public ChkRelativeLayout(Context context, AttributeSet set) {
super(context, set);
}

@Override
public boolean isChecked() {
return _checkbox != null ? _checkbox.isChecked() : false;
}

@Override
protected void onFinishInflate() {
super.onFinishInflate();
// find checked text view
int childCount = getChildCount();
for (int i = 0; i < childCount; ++i) {
View v = getChildAt(i);
if (v instanceof CheckedTextView) {
_checkbox = (CheckedTextView) v;
}
}
}

/**
* <p>
* Changes the checked state of this LinearLayout
* </p>
*
* @param checed
* true to check the LinearLayout ,false to uncheck it
*/
@Override
public void setChecked(boolean checked) {
if (_checkbox != null) {
_checkbox.setChecked(checked);
}

}

@Override
public void toggle() {
if (_checkbox != null) {
_checkbox.toggle();
}
}

}