需要实现的效果图：
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一个项目所用到的对话框风格必须统一，但显示的文字、布局却可以不同。如果每个对话框都要重新去创建的话，会增加代码的冗余，浪费资源。所以可以写个类 MyDialog 继承Dailog。需要的时候直接调用MyDialog类。
一、新建xml布局。
xml效果图如下：
尽量将对话框要用到的所有控件在xml中排好，部分不需要的可以在代码setVisibility(View.GONE);让其消失，省的新建多个xml文件。
二、继承Dailog
package com.dnake.evertalk.widgets;
import com.dnake.evertalk.R;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MyDialog extends Dialog {
public MyDialog(Context context) {
super(context);
}
public MyDialog(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;
}
public Builder setMessage(int message) {//设置信息
this.message = (String) context.getText(message);
return this;
}
public Builder setTitle(int title) { //设置标题
this.title = (String) context.getText(title);
return this;
}
public Builder setTitle(String title) {//直接传字符串
this.title = title;
return this;
}
public Builder setContentView(View v) {
this.contentView = v;
return this;
}
/**
* Set the positive button resource and it's listener
*/
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 void create(View layout) {
final MyDialog dialog = new MyDialog(context,R.style.dialog_theme);
dialog.addContentView(layout, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
((TextView) layout.findViewById(R.id.title)).setText(title);
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 {
layout.findViewById(R.id.positiveButton).setVisibility(View.GONE);
}
if(message != null) {
TextView hint = (TextView) layout.findViewById(R.id.tv_message);
hint.setText(message);
}
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 {
layout.findViewById(R.id.negativeButton).setVisibility(View.GONE);
}
dialog.setContentView(layout);
dialog.show();
}
}
}三、在Activity中创建dialog,设置标题、信息以及按钮的处理事件
private void showDialog() {
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View layout = inflater.inflate(R.layout.dialog, null);
Builder builder = new MyDialog.Builder(this);
builder.setTitle(getResources().getString(R.string.mymessageactivity_delete_title));
builder.setMessage(getResources().getString(R.string.mymessageactivity_delete_all_hint));
builder.setPositiveButton(getResources().getString(R.string.sure),new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
intData();
}
});
builder.setNegativeButton(getResources().getString(R.string.cancel),
new android.content.DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create(layout);
}这样就实现了项目需要的对话框效果图，且不同的Activity的对话框可显示不同的文字，也可以处理不同的点击事件。
本文名称：自定义Dialog
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http://bjjierui.cn/article/ghsogj.html
