本文介绍一个超简单的自己定义主菜单。效果例如以下：
原理：事实上就是对原生的Dialog的一个简单的封装。并加上显示和隐藏的动画效果。再给控件加上回调事件。
TestDialog.java
public class TestDialog implements OnClickListener {
private Context mContext;
private Dialog mDialog;
private Display mDisplay;
private TextView mTitle;
private TextView mOk, mCancel;
private LinearLayout mContent;
private List<String> mItems = null;
private List<OnCustomItemClickListener> mListeners = null;
private List<Drawable> mDrawables = null;
public TestDialog(Context context) {
this.mContext = context;
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
mDisplay = windowManager.getDefaultDisplay();
}
/**
* builder()创建
*
* @return
*/
public TestDialog builder(int layout) {
initView(layout);
return this;
}
/**
* 初始化Dialog视图的方法
*
* @param layout
*/
private void initView(int layout) {
View view = LayoutInflater.from(mContext).inflate(layout, null);
view.setMinimumWidth(mDisplay.getWidth());
//
mTitle = (TextView) view.findViewById(R.id.menu_title);
mContent = (LinearLayout) view.findViewById(R.id.menu_content);
mOk = (TextView) view.findViewById(R.id.menu_ok);
mCancel = (TextView) view.findViewById(R.id.menu_cancel);
mOk.setOnClickListener(this);
mCancel.setOnClickListener(this);
mDialog = new Dialog(mContext, R.style.DialogStyle);
mDialog.setContentView(view);
Window dialogWindow = mDialog.getWindow();
dialogWindow.setGravity(Gravity.LEFT | Gravity.BOTTOM);
WindowManager.LayoutParams lp = dialogWindow.getAttributes();
lp.x = 0;
lp.y = 0;
dialogWindow.setAttributes(lp);
}
/**
*
* @param 能否取消
* @return
*/
public TestDialog setCancelable(boolean b) {
if (mDialog != null) {
mDialog.setCancelable(b);
}
return this;
}
/**
* 设置对话框标题
*
* @param title
* @return
*/
public TestDialog setTitle(String title) {
if (mDialog != null) {
mTitle.setText(title);
mTitle.setVisibility(View.VISIBLE);
}
return this;
}
/**
*
* @param 点击Dialog以外的部分能否够取消
* @return
*/
public TestDialog set(boolean b) {
if (mDialog != null) {
mDialog.setCanceledOnTouchOutside(b);
}
return this;
}
/**
* 取消
*/
public void dismiss() {
mDialog.dismiss();
}
/**
* 用来装视图数据的集合
*
* @param title
* @return
*/
public TestDialog addItem(String title, Drawable drawable, OnCustomItemClickListener clickListener) {
if (mItems == null) {
mItems = new ArrayList<String>();
}
if (mListeners == null) {
mListeners = new ArrayList<TestDialog.OnCustomItemClickListener>();
}
if (mDrawables == null) {
mDrawables = new ArrayList<Drawable>();
}
mItems.add(title);
mListeners.add(clickListener);
mDrawables.add(drawable);
return this;
}
private void setItem() {
if (mItems == null || mItems.size() <= 0) {
return;
}
int count = mItems.size();
for (int i = 0; i < count; i++) {
final int index = i;
TextView view = new TextView(mContext);
view.setText("object" + 1);
view.setCompoundDrawablesRelativeWithIntrinsicBounds(null, mDrawables.get(i), null, null);
view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mListeners.get(index).onClick(index);
}
});
mContent.addView(view);
}
}
public void show() {
setItem();
mDialog.show();
}
public interface OnCustomItemClickListener {
public abstract void onClick(int v);
}
@Override
public void onClick(View v) {
if (v == mOk) {
} else if (v == mCancel) {
}
mDialog.dismiss();
}
}
用到的Teme：
<style name="DialogStyle" parent="@android:style/Theme.Dialog">
<!-- 背景透明 -->
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<!-- 浮于Activity之上 -->
<item name="android:windowIsFloating">true</item>
<!-- 边框 -->
<item name="android:windowFrame">@null</item>
<!-- Dialog以外的区域模糊效果 -->
<item name="android:backgroundDimEnabled">true</item>
<!-- 无标题 -->
<item name="android:windowNoTitle">true</item>
<!-- 半透明 -->
<item name="android:windowIsTranslucent">true</item>
<!-- Dialog进入及退出动画 -->
<item name="android:windowAnimationStyle">@style/ActionSheetDialogAnimation</item>
</style>
<style name="ActionSheetDialogAnimation" parent="@android:style/Animation.Dialog">
<item name="android:windowEnterAnimation">@anim/dialog_in</item>
<item name="android:windowExitAnimation">@anim/dialog_out</item>
</style>动画文件：
dialog_in.xml
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="200"
android:fromYDelta="100%"
android:toYDelta="0" />dialog_out.xml
<?xml version="1.0" encoding="utf-8"?> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="200" android:fromYDelta="0" android:toYDelta="100%" />
用到的布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/white"
android:orientation="vertical" >
<TextView
android:id="@+id/menu_title"
android:layout_width="match_parent"
android:layout_height="45dip"
android:background="@drawable/menu_item_background"
android:gravity="center"
android:visibility="gone" />
<LinearLayout
android:id="@+id/menu_content"
android:layout_width="match_parent"
android:layout_height="150dip"
android:gravity="center_vertical"
android:orientation="horizontal" >
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@android:color/darker_gray" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="45dip"
android:orientation="horizontal" >
<TextView
android:id="@+id/menu_ok"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@drawable/menu_item_background"
android:gravity="center"
android:text="@string/menu_ok" />
<View
android:layout_width="1px"
android:layout_height="match_parent"
android:background="@android:color/darker_gray" />
<TextView
android:id="@+id/menu_cancel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@drawable/menu_item_background"
android:gravity="center"
android:text="@string/menu_cancel" />
</LinearLayout>
</LinearLayout>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@android:color/darker_gray" android:state_focused="true"></item>
<item android:drawable="@android:color/darker_gray" android:state_pressed="true"></item>
<item android:drawable="@android:color/white"></item>
</selector>在Activity中使用：
findViewById(R.id.click).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
TestDialog dialog = new TestDialog(MainActivity.this);
dialog.builder(R.layout.menu);
dialog.setCancelable(false);
dialog.addItem("微博1", getResources().getDrawable(R.drawable.ic_weibo), new OnCustomItemClickListener() {
@Override
public void onClick(int v) {
Toast.makeText(getBaseContext(), "1", 1).show();
}
});
dialog.addItem("微博2", getResources().getDrawable(R.drawable.ic_weibo), new OnCustomItemClickListener() {
@Override
public void onClick(int v) {
Toast.makeText(getBaseContext(), "3", 1).show();
}
});
dialog.show();
}
});