UI系列教程第五课：自定义单选多选对话框的实现
在Android的应用中，常常会用到单选和多选对话框
最简单的方式是直接使用系统自带的对话框
不过有时候出于对应用程序整体风格的考虑
会用到自定义的对话框
说到自定义对话框，无非就是两种实现方式
一种是自定义dialog，另一种就是popwindow
二者皆是设置自定义布局然后再进行一些属性设置
这里包括对话框本身的设置以及对内部控件的监听设置
本文就以常用的单选多选对话框为例来讲解其实现
先来看效果图：
再看工程代码结构：
看ACTIVITY里的调用
public class CustomDialogActivity extends Activity implements OnClickListener{
private View mRootView;
private Button mBtn1;
private Button mBtn2;
private Button mBtn3;
private Button mBtn4;
private SingleChoicePopWindow mSingleChoicePopWindow;
private MultiChoicePopWindow mMultiChoicePopWindow;
private SingleChoiceDialog mSingleChoiceDialog;
private MultiChoicDialog mMultiChoicDialog;
private List<String> mSingleDataList;
private List<String> mMultiDataList;
private Context mContext;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mContext = this;
initView();
initData();
}
public void initView()
{
mBtn1 = (Button) findViewById(R.id.button1);
mBtn1.setOnClickListener(this);
mBtn2 = (Button) findViewById(R.id.button2);
mBtn2.setOnClickListener(this);
mBtn3 = (Button) findViewById(R.id.button3);
mBtn3.setOnClickListener(this);
mBtn4 = (Button) findViewById(R.id.button4);
mBtn4.setOnClickListener(this);
mRootView = findViewById(R.id.rootView);
}
private final static int COUNT = 3;
public void initData()
{
mSingleDataList = new ArrayList<String>();
mMultiDataList = new ArrayList<String>();
boolean booleans[] = new boolean[COUNT * 5];
for(int i = 0; i < COUNT; i++)
{
String string1 = "geniuseoe2012 -->" + i;
mSingleDataList.add(string1);
}
for(int i = 0; i < COUNT * 2; i++)
{
String string2 = "talent -->" + i;
mMultiDataList.add(string2);
}
initPopWindow(booleans);
initDialog(booleans);
}
public void initPopWindow(boolean []booleans)
{
mSingleChoicePopWindow = new SingleChoicePopWindow(this, mRootView, mSingleDataList);
mSingleChoicePopWindow.setTitle("genius single title");
mSingleChoicePopWindow.setOnOKButtonListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int selItem = mSingleChoicePopWindow.getSelectItem();
Toast.makeText(mContext, "selItem = " + selItem, Toast.LENGTH_SHORT).show();
}
});
mMultiChoicePopWindow = new MultiChoicePopWindow(this, mRootView, mMultiDataList, booleans);
mMultiChoicePopWindow.setTitle("genius multi title");
mMultiChoicePopWindow.setOnOKButtonListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
boolean []selItems = mMultiChoicePopWindow.getSelectItem();
int size = selItems.length;
StringBuffer stringBuffer = new StringBuffer();
for(int i = 0; i < size; i++)
{
if (selItems[i])
{
stringBuffer.append(i + " ");
}
}
Toast.makeText(mContext, "selItems = " + stringBuffer.toString(), Toast.LENGTH_SHORT).show();
}
});
}
public void initDialog(boolean []booleans)
{
mSingleChoiceDialog = new SingleChoiceDialog(this, mSingleDataList);
mSingleChoiceDialog.setTitle("genius single title");
mSingleChoiceDialog.setOnOKButtonListener(new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
int selItem = mSingleChoiceDialog.getSelectItem();
Toast.makeText(mContext, "selItem = " + selItem, Toast.LENGTH_SHORT).show();
}
});
mMultiChoicDialog = new MultiChoicDialog(this, mMultiDataList, booleans);
mMultiChoicDialog.setTitle("genius multi title");
mMultiChoicDialog.setOnOKButtonListener(new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
boolean []selItems = mMultiChoicDialog.getSelectItem();
int size = selItems.length;
StringBuffer stringBuffer = new StringBuffer();
for(int i = 0; i < size; i++)
{
if (selItems[i])
{
stringBuffer.append(i + " ");
}
}
Toast.makeText(mContext, "selItems = " + stringBuffer.toString(), Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId())
{
case R.id.button1:
showSingleChoiceWindow();
break;
case R.id.button2:
showMultiChoiceWindow();
break;
case R.id.button3:
showSingleChoiceDialog();
break;
case R.id.button4:
showMultiChoiceDialog();
break;
}
}
public void showSingleChoiceWindow()
{
mSingleChoicePopWindow.show(true);
}
public void showMultiChoiceWindow()
{
mMultiChoicePopWindow.show(true);
}
public void showSingleChoiceDialog()
{
mSingleChoiceDialog.show();
}
public void showMultiChoiceDialog()
{
mMultiChoicDialog.show();
}
}
以单选popwindow为例，其调用方式如下：
mSingleChoicePopWindow = new SingleChoicePopWindow(this, mRootView, mSingleDataList);
mSingleChoicePopWindow.setTitle("genius single title");
mSingleChoicePopWindow.setOnOKButtonListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int selItem = mSingleChoicePopWindow.getSelectItem();
Toast.makeText(mContext, "selItem = " + selItem, Toast.LENGTH_SHORT).show();
}
});
1.初始化对象
2.设置标题
3.添加按钮监听
最后在监听回调里通过getSelectItem方法获取选择值即可得到结果值，简洁易用
大家可直接拷贝到项目里再根据具体情况做细微调整即可
不过不知道为什么dialog始终无法填充全屏，所以只好去掉布局的背景色好与周围的暗色融为一体
附上链接工程：
http://download.csdn.net/detail/geniuseoe2012/4522431
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