android-common包里面的各种弹框-AlertDialog

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本文介绍了一种自定义实现仿iOS风格AlertDialog的方法，通过构建自定义对话框布局，设置标题、消息内容及按钮等属性，并提供了多种配置选项，如设置是否可取消、按钮文字等。

自定义仿IOS的AlertDialog的样式

用法：

new AlertDialog(this)
                        .builder()
                        .setCancelable(false)
                        .setMsg(getString(R.string.login_out_confirm))
                        .setNegativeButton(getString(R.string.cancel_text), new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {

                            }
                        })
                        .setPositiveButton(getString(R.string.confirm_text), new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                //因为考虑到没有网络，所以直接进行本地token清理
                                loginOut();
                            }
                        })
                        .show();

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 setMsgGravity(int gravity) {
        txt_msg.setGravity(gravity);
        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) {
                dialog.dismiss();
                listener.onClick(v);
            }
        });
        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) {
                dialog.dismiss();
                listener.onClick(v);
            }
        });
        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();
    }
}

样式

 <!-- 自定义仿IOS的AlertDialog的样式 -->
    <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>