自定义对话框样式

一、定义对话框布局：activity_main.xml

二、布局文件中引用的样式：styles.xml

三、自定义对话框类：CustomDialog.java

在其中引用了对话框的布局文件，activity_main.xml

package com.zyf.myselfdialog_demo;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class CustomDialog extends Dialog {

	public CustomDialog(Context context, int theme) {
		super(context, theme);
	}

	public CustomDialog(Context context) {
		super(context);
	}

	/**
	 * Helper class for creating a custom dialog
	 */
	public static class Builder {

		private Context context;
		private String title;
		private String message;
		private String positiveButtonText;
		private String negativeButtonText;
		private View contentView;

		private OnClickListener positiveButtonClickListener,
				negativeButtonClickListener;

		public Builder(Context context) {
			this.context = context;
		}

		/**
		 * Set the Dialog message from String
		 * 
		 * @param title
		 * @return
		 */
		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;
		}

		/**
		 * Set a custom content view for the Dialog. If a message is set, the
		 * contentView is not added to the Dialog...
		 * 
		 * @param v
		 * @return
		 */
		public Builder setContentView(View v) {
			this.contentView = v;
			return this;
		}

		/**
		 * Set the positive button resource and it's listener
		 * 
		 * @param positiveButtonText
		 * @param listener
		 * @return
		 */
		public Builder setPositiveButton(int positiveButtonText,
				OnClickListener listener) {

			this.positiveButtonText = (String) context
					.getText(positiveButtonText);
			this.positiveButtonClickListener = listener;
			return this;
		}

		/**
		 * Set the positive button text and it's listener
		 * 
		 * @param positiveButtonText
		 * @param listener
		 * @return
		 */
		public Builder setPositiveButton(String positiveButtonText,
				OnClickListener listener) {
			this.positiveButtonText = positiveButtonText;
			this.positiveButtonClickListener = listener;
			return this;
		}

		/**
		 * Set the negative button resource and it's listener
		 * 
		 * @param negativeButtonText
		 * @param listener
		 * @return
		 */
		public Builder setNegativeButton(int negativeButtonText,
				OnClickListener listener) {
			this.negativeButtonText = (String) context
					.getText(negativeButtonText);
			this.negativeButtonClickListener = listener;
			return this;
		}

		/**
		 * Set the negative button text and it's listener
		 * 
		 * @param negativeButtonText
		 * @param listener
		 * @return
		 */
		public Builder setNegativeButton(String negativeButtonText,
				OnClickListener listener) {
			this.negativeButtonText = negativeButtonText;
			this.negativeButtonClickListener = listener;
			return this;
		}

		/**
		 * Create the custom dialog
		 */
		public CustomDialog create() {

			LayoutInflater inflater = (LayoutInflater) context
					.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
					
			// instantiate the dialog with the custom Theme
			final CustomDialog dialog = new CustomDialog(context,
					R.style.Dialog);
					
			View layout = inflater.inflate(R.layout.activity_main, 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))
						.setText(positiveButtonText);
						
				if (positiveButtonClickListener != null) {
					((Button) layout.findViewById(R.id.positiveButton))
							.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.positiveButton).setVisibility(
						View.GONE);
			}
			// set the cancel button
			if (negativeButtonText != null) {
				((Button) layout.findViewById(R.id.negativeButton))
						.setText(negativeButtonText);
						
				if (negativeButtonClickListener != null) {
					((Button) layout.findViewById(R.id.negativeButton))
							.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).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.WRAP_CONTENT,
								LayoutParams.WRAP_CONTENT));
			}
			
			dialog.setContentView(layout);
			return dialog;
		}

	}

}

四、在Activity中用自定义对话框类：MainActivity.java

package com.zyf.myselfdialog_demo;

import com.zyf.myselfdialog_demo.CustomDialog.Builder;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {

	private static final int CUSTOM_DIALOG = 1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		showDialog(CUSTOM_DIALOG);
	}

	@Override
	public Dialog onCreateDialog(int dialogId) {

		Dialog dialog = null;

		switch (dialogId) {

		case CUSTOM_DIALOG:
			Builder customBuilder = new Builder(MainActivity.this);

			customBuilder
					.setTitle("Custom title")
					.setMessage("Custom body")
					.setNegativeButton("Cancel",
							new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog,
										int which) {
									 MainActivity.this
									 .dismissDialog(CUSTOM_DIALOG);
//									Toast.makeText(MainActivity.this, "cancel",
//											3).show();
								}
							})
					.setPositiveButton("Confirm",
							new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog,
										int which) {
									 dialog.dismiss();
									// Toast.makeText(MainActivity.this, "ok",
									// 3).show();
								}
							});

			dialog = customBuilder.create();
			break;

		}
		return dialog;
	}

}