Android仿IOS自定义AlertDialog提示框

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() {  View view = LayoutInflater.from(context).inflate(    R.layout.view_alertdialog, null);  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);  dialog = new Dialog(context, R.style.AlertDialogStyle);  dialog.setContentView(view);  lLayout_bg.setLayoutParams(new FrameLayout.LayoutParams((int) (display    .getWidth() * 0.80), 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(); }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/lLayout_bg" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/alert_bg" android:orientation="vertical" > <TextView  android:id="@+id/txt_title"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginLeft="15dp"  android:layout_marginRight="15dp"  android:layout_marginTop="15dp"  android:gravity="center"  android:textColor="@color/black"  android:textSize="18sp"  android:text="提示"  android:textStyle="bold" /> <TextView  android:id="@+id/txt_msg"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginLeft="15dp"  android:layout_marginRight="15dp"  android:layout_marginTop="32dp"  android:gravity="center"  android:text="提示信息"  android:textColor="@color/black"  android:textSize="16sp" /> <ImageView  android:layout_width="match_parent"  android:layout_height="0.5dp"  android:layout_marginTop="25dp"  android:background="@color/alertdialog_line" /> <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal" >  <Button   android:id="@+id/btn_neg"   android:layout_width="wrap_content"   android:layout_height="43dp"   android:layout_weight="1"   android:background="@drawable/alertdialog_left_selector"   android:gravity="center"   android:textColor="@color/actionsheet_blue"   android:textSize="16sp"    />  <ImageView   android:id="@+id/img_line"   android:layout_width="0.5dp"   android:layout_height="43dp"   android:background="@color/alertdialog_line" />  <Button   android:id="@+id/btn_pos"   android:layout_width="wrap_content"   android:layout_height="43dp"   android:layout_weight="1"   android:background="@drawable/alertdialog_right_selector"   android:gravity="center"   android:textColor="@color/actionsheet_blue"   android:textSize="16sp"   android:textStyle="bold"   /> </LinearLayout></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/alert_btn_left_pressed" android:state_pressed="true"/> <item android:drawable="@drawable/trans_bg"/></selector>

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/alert_btn_right_pressed" android:state_pressed="true"/> <item android:drawable="@drawable/trans_bg"/></selector>

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/alert_btn_single_pressed" android:state_pressed="true"/> <item android:drawable="@drawable/trans_bg"/></selector><style name="AlertDialogStyle" 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> </style>

  new AlertDialog(this).builder().setMsg(msg)  .setPositiveButton("确定", new OnClickListener() {   @Override   public void onClick(View v) {   }  }).setNegativeButton("取消", new OnClickListener() {   @Override   public void onClick(View arg0) {    // TODO Auto-generated method stub   }  }).show();