本文介绍的仿IOS对话框的实现，先来看一下效果图
具体代码如下：
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(); } }
布局文件view_alertdialog.xml
<?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>
alertdialog_left_selector.xml
<?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>
alertdialog_right_selector.xml
<?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>
alertdialog_single_selector.xml
<?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>
用到的.9图片
调用方式：
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();
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。