Android仿IOS自定义AlertDialog

本文介绍的仿IOS对话框的实现，先来看一下效果图

Paste_Image.png

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



    

    

    

    

        

        

        
    

alertdialog_left_selector.xml



    
    

alertdialog_right_selector.xml



    
    

alertdialog_single_selector.xml



    
    

用到的图片

alert_btn_right_pressed.9.png

alert_btn_left_pressed.9.png

alert_bg.9.png

alert_btn_single_pressed.9.png

trans_bg.png

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();
    

colors.xml文件
#c6c6c6
#037BFF
#000000