定义一个类然后去继承Dialog类,然后重写相应的构造器方法.大家都知道一般的对话框的创建过程都是来一个AlertDialog.Builder对象,然后使用一些set方法来设置标题内容以及设置一些自定义的view和点击的Button以及相应的点击事件并且可以采用链式编程一连串设置一些属性.运用到了设计模式中的建造者模式的方式来实现自定义控件的实现。
public class MapDialog extends Dialog{public MapDialog(Context context) { super(context); } public MapDialog(Context context, int theme) { super(context, theme); } public static class Builder { PRivate Context context; private String title; private String message; private String positiveButtonText; private String negativeButtonText; private View contentView; private DialogInterface.OnClickListener positiveButtonClickListener; private DialogInterface.OnClickListener negativeButtonClickListener; public Builder(Context context) { this.context = context; } public Builder setMessage(String message) { this.message = message; return this; } /** * Set the Dialog message from resource * * @param title * @return */ public Builder setMessage(int message) { this.message = (String) context.getText(message); return this; } /** * Set the Dialog title from resource * * @param title * @return */ public Builder setTitle(int title) { this.title = (String) context.getText(title); return this; } /** * Set the Dialog title from String * * @param title * @return */ public Builder setTitle(String title) { this.title = title; return this; } public Builder setContentView(View v) { this.contentView = v; return this; } /** * Set the positive button resource and it's listener * * @param positiveButtonText * @return */ public Builder setPositiveButton(int positiveButtonText, DialogInterface.OnClickListener listener) { this.positiveButtonText = (String) context .getText(positiveButtonText); this.positiveButtonClickListener = listener; return this; } public Builder setPositiveButton(String positiveButtonText, DialogInterface.OnClickListener listener) { this.positiveButtonText = positiveButtonText; this.positiveButtonClickListener = listener; return this; } public Builder setNegativeButton(int negativeButtonText, DialogInterface.OnClickListener listener) { this.negativeButtonText = (String) context .getText(negativeButtonText); this.negativeButtonClickListener = listener; return this; } public Builder setNegativeButton(String negativeButtonText, DialogInterface.OnClickListener listener) { this.negativeButtonText = negativeButtonText; this.negativeButtonClickListener = listener; return this; } public MapDialog create() { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); // instantiate the dialog with the custom Theme final MapDialog dialog = new MapDialog(context); View layout = inflater.inflate(R.layout.dialog_normal_layout, null); dialog.addContentView(layout, new LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); // set the dialog title ((TextView) layout.findViewById(R.id.title)).setText(title); // set the confirm button if (positiveButtonText != null) { ((Button) layout.findViewById(R.id.positiveButton_ok)) .setText(positiveButtonText); if (positiveButtonClickListener != null) { ((Button) layout.findViewById(R.id.negativeButton_cancel)) .setOnClickListener(new View.OnClickListener() { public void onClick(View v) { positiveButtonClickListener.onClick(dialog, DialogInterface.BUTTON_POSITIVE); } }); } } else { // if no confirm button just set the visibility to GONE layout.findViewById(R.id.negativeButton_cancel).setVisibility( View.GONE); } // set the cancel button if (negativeButtonText != null) { ((Button) layout.findViewById(R.id.negativeButton_cancel)) .setText(negativeButtonText); if (negativeButtonClickListener != null) { ((Button) layout.findViewById(R.id.negativeButton_cancel)) .setOnClickListener(new View.OnClickListener() { public void onClick(View v) { negativeButtonClickListener.onClick(dialog, DialogInterface.BUTTON_NEGATIVE); } }); } } else { // if no confirm button just set the visibility to GONE layout.findViewById(R.id.negativeButton_cancel).setVisibility( View.GONE); } // set the content message if (message != null) { ((TextView) layout.findViewById(R.id.message)).setText(message); } else if (contentView != null) { // if no message set // add the contentView to the dialog body ((LinearLayout) layout.findViewById(R.id.content)) .removeAllViews(); ((LinearLayout) layout.findViewById(R.id.content)) .addView(contentView, new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT)); } dialog.setContentView(layout); return dialog; } } }
关于使用上述控件如下所示:
private void initDialogViews(){ MapDialog.Builder builder = new MapDialog.Builder(this); builder.setMessage("这个就是自定义的提示框"); builder.setTitle("提示"); builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); //设置你的操作事项 } }); builder.setNegativeButton("取消", new android.content.DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); builder.create().show(); }
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