仿IOS 对话框

package com.zf.iosdialog.widget;

import android.app.Dialog;
import android.content.Context;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;

import com.zf.iosdialog.R;

public class AlertDialog {
private Context context;
private Dialog dialog;
private LinearLayout lLayout_bg;
private TextView txt_title;
private TextView txt_msg;
private Button btn_neg;
private Button btn_pos;
private ImageView img_line;
private Display display;
private boolean showTitle = false;
private boolean showMsg = false;
private boolean showPosBtn = false;
private boolean showNegBtn = false;

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

public AlertDialog builder() {
// 获取Dialog布局
View view = LayoutInflater.from(context).inflate(
R.layout.view_alertdialog, null);

// 获取自定义Dialog布局中的控件
lLayout_bg = (LinearLayout) view.findViewById(R.id.lLayout_bg);
txt_title = (TextView) view.findViewById(R.id.txt_title);
txt_title.setVisibility(View.GONE);
txt_msg = (TextView) view.findViewById(R.id.txt_msg);
txt_msg.setVisibility(View.GONE);
btn_neg = (Button) view.findViewById(R.id.btn_neg);
btn_neg.setVisibility(View.GONE);
btn_pos = (Button) view.findViewById(R.id.btn_pos);
btn_pos.setVisibility(View.GONE);
img_line = (ImageView) view.findViewById(R.id.img_line);
img_line.setVisibility(View.GONE);

// 定义Dialog布局和参数
dialog = new Dialog(context, R.style.AlertDialogStyle);
dialog.setContentView(view);

// 调整dialog背景大小
lLayout_bg.setLayoutParams(new FrameLayout.LayoutParams((int) (display
.getWidth() * 0.85), LayoutParams.WRAP_CONTENT));

return this;
}

public AlertDialog setTitle(String title) {
showTitle = true;
if ("".equals(title)) {
txt_title.setText("标题");
} else {
txt_title.setText(title);
}
return this;
}

public AlertDialog setMsg(String msg) {
showMsg = true;
if ("".equals(msg)) {
txt_msg.setText("内容");
} else {
txt_msg.setText(msg);
}
return this;
}

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

public AlertDialog setPositiveButton(String text,
final OnClickListener listener) {
showPosBtn = true;
if ("".equals(text)) {
btn_pos.setText("确定");
} else {
btn_pos.setText(text);
}
btn_pos.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
listener.onClick(v);
dialog.dismiss();
}
});
return this;
}

public AlertDialog setNegativeButton(String text,
final OnClickListener listener) {
showNegBtn = true;
if ("".equals(text)) {
btn_neg.setText("取消");
} else {
btn_neg.setText(text);
}
btn_neg.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
listener.onClick(v);
dialog.dismiss();
}
});
return this;
}

private void setLayout() {
if (!showTitle && !showMsg) {
txt_title.setText("提示");
txt_title.setVisibility(View.VISIBLE);
}

if (showTitle) {
txt_title.setVisibility(View.VISIBLE);
}

if (showMsg) {
txt_msg.setVisibility(View.VISIBLE);
}

if (!showPosBtn && !showNegBtn) {
btn_pos.setText("确定");
btn_pos.setVisibility(View.VISIBLE);
btn_pos.setBackgroundResource(R.drawable.alertdialog_single_selector);
btn_pos.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
}

if (showPosBtn && showNegBtn) {
btn_pos.setVisibility(View.VISIBLE);
btn_pos.setBackgroundResource(R.drawable.alertdialog_right_selector);
btn_neg.setVisibility(View.VISIBLE);
btn_neg.setBackgroundResource(R.drawable.alertdialog_left_selector);
img_line.setVisibility(View.VISIBLE);
}

if (showPosBtn && !showNegBtn) {
btn_pos.setVisibility(View.VISIBLE);
btn_pos.setBackgroundResource(R.drawable.alertdialog_single_selector);
}

if (!showPosBtn && showNegBtn) {
btn_neg.setVisibility(View.VISIBLE);
btn_neg.setBackgroundResource(R.drawable.alertdialog_single_selector);
}
}

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