自定义AlertDialog

UiHelper.java文件:

package com.show.act;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class UiHelper {

	/** 点击确定后触发的事件. */
	public interface OnClickYesListener {
		abstract void onClickYes();
	}

	/** 点击取消后触发的事件. */
	public interface OnClickNoListener {
		abstract void onClickNo();
	}

	public static void showQuestionDialog(Context context, String title,
			String text, final OnClickYesListener listenerYes,
			final OnClickNoListener listenerNo) {

		Builder builder = new AlertDialog.Builder(context);

		if (!isBlank(text)) {
			final TextView textView = new TextView(context);
			textView.setText(text);
			LinearLayout layout = new LinearLayout(context);
			layout.setPadding(10, 0, 10, 0);
			layout.setOrientation(LinearLayout.VERTICAL);
			layout.addView(textView, new LayoutParams(LayoutParams.FILL_PARENT,
					LayoutParams.WRAP_CONTENT));
			final ImageView mImgView = new ImageView(context);
			mImgView.setBackgroundResource(R.drawable.icon);
			layout.addView(mImgView, new LayoutParams(LayoutParams.FILL_PARENT,
					LayoutParams.WRAP_CONTENT));
			builder.setView(layout);
		}
		builder.setTitle(title);
		builder.setPositiveButton(context.getString(R.string.yes),
				new OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						if (listenerYes != null) {
							listenerYes.onClickYes();
						}
					}
				});
		builder.setNegativeButton(context.getString(R.string.no),
				new OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						if (listenerNo != null) {
							listenerNo.onClickNo();
						}
					}
				});
		builder.setCancelable(true);
		builder.create().show();

	}

	/** 判断显示内容是否为null. */
	public static boolean isBlank(String str) {
		int strLen;
		if (str == null || (strLen = str.length()) == 0) {
			return true;
		}
		for (int i = 0; i < strLen; i++) {
			if ((Character.isWhitespace(str.charAt(i)) == false)) {
				return false;
			}
		}
		return true;
	}
}

在代码中,我们只要这样调用即可:

mButton.setOnClickListener(new OnClickListener() {
			public void onClick(View arg0) {
				UiHelper.showQuestionDialog(ShowDialogActivity.this, "111",
						"222", new OnClickYesListener() {
							public void onClickYes() {
							}
						}, new OnClickNoListener() {
							public void onClickNo() {
							}
						});
			}
		});

评论

1 楼 茉莉清茶 2011-12-21  

恩，这个也算一种，不过有一种更深入，就是重写AlertDialog，这样会更加随心所欲！