Android 仿ios底部弹出式对话框

new ActionSheetDialog(context)
.builder()
.setTitle("设置")
.setCancelable(false)
.setCanceledOnTouchOutside(true)
.addSheetItem(Constants.MODDLE_FONTSIZE, SheetItemColor.Blue, new OnSheetItemClickListener() {
@Override
public void onClick(int which) {

}
})
.addSheetItem(Constants.SMALL_FONTSIZE,SheetItemColor.Blue, new OnSheetItemClickListener() {
@Override
public void onClick(int which) {

}
}).show();

（二）核心类

public class ActionSheetDialog {
private Context context;
private Dialog dialog;
private TextView txt_title;
private TextView txt_cancel;
private LinearLayout lLayout_content;
private ScrollView sLayout_content;
private boolean showTitle = false;
private List<SheetItem> sheetItemList;
private Display display;

public ActionSheetDialog(Context context) {
this.context = context;
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
display = windowManager.getDefaultDisplay();
}

public ActionSheetDialog builder() {
// 获取Dialog布局
View view = LayoutInflater.from(context).inflate(R.layout.view_actionsheet, null);
// 设置Dialog最小宽度为屏幕宽度
view.setMinimumWidth(display.getWidth());
// 获取自定义Dialog布局中的控件
sLayout_content = (ScrollView) view.findViewById(R.id.sLayout_content);
lLayout_content = (LinearLayout) view.findViewById(R.id.lLayout_content);
txt_title = (TextView) view.findViewById(R.id.txt_title);
txt_cancel = (TextView) view.findViewById(R.id.txt_cancel);
txt_cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});

// 定义Dialog布局和参数
dialog = new Dialog(context, R.style.ActionSheetDialogStyle);
dialog.setContentView(view);
Window dialogWindow = dialog.getWindow();
dialogWindow.setGravity(Gravity.LEFT | Gravity.BOTTOM);
WindowManager.LayoutParams lp = dialogWindow.getAttributes();
lp.x = 0;
lp.y = 0;
dialogWindow.setAttributes(lp);
return this;
}

public ActionSheetDialog setTitle(String title) {
showTitle = true;
txt_title.setVisibility(View.VISIBLE);
txt_title.setText(title);
return this;
}

public ActionSheetDialog setCancelable(boolean cancel) {
dialog.setCancelable(cancel);
return this;
}

public ActionSheetDialog setCanceledOnTouchOutside(boolean cancel) {
dialog.setCanceledOnTouchOutside(cancel);
return this;
}

/**
* @param strItem  条目名称
* @param color    条目字体颜色，设置null则默认蓝色
* @param listener
* @return
*/
public ActionSheetDialog addSheetItem(String strItem, SheetItemColor color, OnSheetItemClickListener listener{
if (sheetItemList == null) {
sheetItemList = new ArrayList<SheetItem>();
}
sheetItemList.add(new SheetItem(strItem, color, listener));
return this;
}

/**
* 设置条目布局
*/
private void setSheetItems() {
if (sheetItemList == null || sheetItemList.size() <= 0) {
return;
}
int size = sheetItemList.size();
// TODO 高度控制，非最佳解决办法
// 添加条目过多的时候控制高度
if (size >= 7) {
LayoutParams params = (LayoutParams) sLayout_content.getLayoutParams();
params.height = display.getHeight() / 2;
sLayout_content.setLayoutParams(params);
}
// 循环添加条目
for (int i = 1; i <= size; i++) {
final int index = i;
SheetItem sheetItem = sheetItemList.get(i - 1);
String strItem = sheetItem.name;
SheetItemColor color = sheetItem.color;
final OnSheetItemClickListener listener = (OnSheetItemClickListener) sheetItem.itemClickListener;
TextVie
fdf5
w textView = new TextView(context);
textView.setText(strItem);
textView.setTextSize(18);
textView.setGravity(Gravity.CENTER);
// 背景图片
if (size == 1) {
if (showTitle) {
textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
} else {
textView.setBackgroundResource(R.drawable.actionsheet_single_selector);
}
} else {
if (showTitle) {
if (i >= 1 && i < size) {
textView.setBackgroundResource(R.drawable.actionsheet_middle_selector);
} else {
textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
}
} else {
if (i == 1) {
textView.setBackgroundResource(R.drawable.actionsheet_top_selector);
} else if (i < size) {
textView.setBackgroundResource(R.drawable.actionsheet_middle_selector);
} else {
textView.setBackgroundResource(R.drawable.actionsheet_bottom_selector);
}
}
}

// 字体颜色
if (color == null) {
textView.setTextColor(Color.parseColor(SheetItemColor.Blue.getName()));
} else {
textView.setTextColor(Color.parseColor(color.getName()));
}

// 高度
float scale = context.getResources().getDisplayMetrics().density;
int height = (int) (45 * scale + 0.5f);
textView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, height));
// 点击事件
textView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
listener.onClick(index);
dialog.dismiss();
}
});
lLayout_content.addView(textView);
}
}

public void show() {
setSheetItems();
dialog.show();
}

public interface OnSheetItemClickListener {
void onClick(int which);
}

public class SheetItem {
String name;
OnSheetItemClickListener itemClickListener;
SheetItemColor color;
public SheetItem(String name, SheetItemColor color, OnSheetItemClickListener itemClickListener) {
this.name = name;
this.color = color;
this.itemClickListener = itemClickListener;
}
}

public enum SheetItemColor {
Blue("#037BFF"), Red("#FD4A2E");
private String name;

private SheetItemColor(String name) {
this.name = name;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp" >
<TextView
android:id="@+id/txt_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/actionsheet_top_normal"
android:gravity="center"
android:minHeight="45dp"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:textColor="@color/actionsheet_gray"
android:textSize="13sp"
android:visibility="gone" />
<ScrollView
android:id="@+id/sLayout_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fadingEdge="none">
<LinearLayout
android:id="@+id/lLayout_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
<TextView
android:id="@+id/txt_cancel"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginTop="8dp"
android:background="@drawable/actionsheet_single_selector"
android:gravity="center"
android:text="取消"
android:textColor="@color/dark_blue"
android:textSize="18sp" />
</LinearLayout>

（四）style样式及selector

//actionsheet_single_selector

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/actionsheet_single_pressed" android:state_pressed="true"/>
<item android:drawable="@drawable/actionsheet_single_normal"/>
</selector>

<!-- 自定义仿IOS的ActionSheet底部Dialog的样式 ，有模糊效果 -->
<style name="ActionSheetDialogStyle" parent="@android:style/Theme.Dialog">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowFrame">@null</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowAnimationStyle">@style/ActionSheetDialogAnimation</item>
</style>
<!-- ActionSheet进出动画 -->
<style name="ActionSheetDialogAnimation" parent="@android:style/Animation.Dialog">
<item name="android:windowEnterAnimation">@anim/actionsheet_dialog_in</item>
<item name="android:windowExitAnimation">@anim/actionsheet_dialog_out</item>
</style>