android 自定义的AlertDialog强化版
2017-01-18 16:42
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上一篇文章http://blog.csdn.net/qq_33748378/article/details/54581422#comments介绍了自定义的AlertDialog,在此基础之上，再来看下常用的自定义的AlertDialog。
自定义的itemDialog:
item_dialog布局文件：
MainActivity中代码：
drawable/edit_item_text_bg：
MianActivity中代码：
效果图：
如果需要对editText输入的内容作限制，需要在EditDialog中添加如下代码：
R.layout.layout_load_progress_dialog为：
实现的效果：
在此基础之上，可以进一步添加自定义样式：
在LoadProgressDialog中改变的代码：
解决的办法是：
完整的项目源码：http://download.csdn.net/detail/qq_33748378/9740725
包含的内容：
ItemDialog:
首先来看下android原生的itemDialogpackage com.example.yk.dialogtest;
import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.Toast;
public class ItemDialogActivity extends AppCompatActivity {
private String[] items={"a","b","c","d","e","d","f","g","h","i","j","k","l","m"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_item_dialog);
AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);
alertDialog.setTitle("title");
alertDialog.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(ItemDialogActivity.this, "点击了"+items[i], Toast.LENGTH_SHORT).show();
}
});
alertDialog.show();
}
}效果如图：自定义的itemDialog:
package com.example.yk.dialogtest;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
/**
* Created by yk on 2017/1/17.
*/
public class itemDialog extends Dialog implements AdapterView.OnItemClickListener {
public interface OnDialogItemClickListener {
/**
* 点击item 事件的回调方法
* @param requestCode 用于区分某种情况下的showDialog
* @param position
* @param item
*/
void onDialogItemClick(int requestCode, int position,String item);
}
private String title;
private Context context;
private String[] items;
private int requestCode;
private OnDialogItemClickListener listener;
public itemDialog(Context context, String title, String[] items, int requestCode, OnDialogItemClickListener listener) {
super(context, R.style.MyDialog);
this.context=context;
this.title=title;
this.items=items;
this.requestCode=requestCode;
this.listener=listener;
}
private TextView textView;
private ListView listView;
private ArrayAdapter<String> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.item_dialog);
textView = (TextView) findViewById(R.id.tvItemDialogTitle);
listView = (ListView) findViewById(R.id.lvItemDialog);
adapter = new ArrayAdapter<String>(context, R.layout.item_dialog_activity,R.id.text_view, items);
textView.setText(title);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
listener.onDialogItemClick(requestCode,i, adapter.getItem(i));
dismiss();
}
}item_dialog布局文件：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_margin="30dp" android:background="@drawable/edit_item_text_bg" android:layout_height="match_parent"> <TextView android:id="@+id/tvItemDialogTitle" android:textColor="@color/black" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:textSize="21sp" android:layout_margin="15dp" android:text="Title" /> <ListView android:id="@+id/lvItemDialog" android:layout_width="match_parent" android:layout_height="wrap_content" android:divider="@color/gray_4" android:dividerHeight="1px" /> </LinearLayout>MyDialog style:
<style name="MyDialog"> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowFrame">@null</item> <item name="android:windowNoTitle">true</item> <item name="android:windowIsFloating">true</item> <item name="android:windowIsTranslucent">true</item> <item name="android:windowContentOverlay">@null</item> <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item> <item name="android:backgroundDimEnabled">true</item> </style>item_dialog_activity布局文件：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="match_parent" android:layout_height="40dp" android:padding="10dp" android:id="@+id/text_view" android:gravity="center"/> </LinearLayout>
MainActivity中代码：
package com.example.yk.dialogtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class CustomItemDialog extends AppCompatActivity implements itemDialog.OnDialogItemClickListener {
private static final int REQUEST_CODE_SECOND = 2;
private String[] items={"a","b","c","d","e","d","f","g","h","i","j","k","l","m"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_item_dialog);
itemDialog itemDialog=new itemDialog(this,"title",items,REQUEST_CODE_SECOND,this);
itemDialog.show();
}
@Override
public void onDialogItemClick(int requestCode, int position, String item) {
if(requestCode==REQUEST_CODE_SECOND){
Toast.makeText(this, item, Toast.LENGTH_SHORT).show();
}
}
}效果图：EditDialog:
editDialog中代码：package com.example.yk.dialogtest;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.TextView;
/**
* Created by yk on 2017/1/18.
*/
public class EditDialog extends Dialog implements View.OnClickListener {
public interface OnDialogButtonClickListener{
void onDialogButtonClick(int requestCode,boolean isPositiveBtn,String s);
}
private String title;
private String strPositive;
private String strNegative;
private int requestCode;
private Context context;
private OnDialogButtonClickListener listener;
public EditDialog(Context context,String title,String strNegative,String strPositive,int requestCode,OnDialogButtonClickListener listener) {
super(context,R.style.MyDialog);
this.context=context;
this.title=title;
this.strNegative=strNegative;
this.strPositive=strPositive;
this.requestCode=requestCode;
this.listener=listener;
}
private TextView tvTitle,tvCancel,tvConfirm;
private EditText etInput;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_edit_dialog);
tvTitle= (TextView) findViewById(R.id.tv_title);
tvCancel= (TextView) findViewById(R.id.tv_cancel);
tvConfirm= (TextView) findViewById(R.id.tv_confirm);
etInput= (EditText) findViewById(R.id.edit_text);
tvTitle.setText(title);
if(TextUtils.isEmpty(tvConfirm.getText().toString().trim())){
tvCancel.setVisibility(View.GONE);
}else {
tvCancel.setVisibility(View.VISIBLE);
}
tvCancel.setOnClickListener(this);
tvConfirm.setOnClickListener(this);
tvTitle.postDelayed(new Runnable() {
@Override
public void run() {
showSoftKeyBoard();//弹出输入键盘
}
},100);
}
public void showSoftKeyBoard(){
InputMethodManager manager= (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
manager.toggleSoftInput(0,InputMethodManager.HIDE_NOT_ALWAYS);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.tv_confirm:
//点击确定按钮
listener.onDialogButtonClick(requestCode,true,etInput.getText().toString().trim());
break;
case R.id.tv_cancel:
//点击取消按钮
listener.onDialogButtonClick(requestCode,false,null);
break;
}
dismiss();
}
}layout_edit_dialog布局文件：<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="250dp" android:layout_height="wrap_content" android:layout_margin="50dp" android:background="@drawable/edit_item_text_bg" android:orientation="vertical"> <TextView android:id="@+id/tv_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="title" android:gravity="center" android:textSize="28sp" android:layout_marginTop="5dp" android:layout_marginBottom="5dp" android:paddingTop="3dp" android:paddingBottom="3dp" android:textAllCaps="false"/> <EditText android:id="@+id/edit_text" android:singleLine="true" android:inputType="numberDecimal" android:textSize="25sp" android:paddingTop="3dp" android:paddingBottom="3dp" android:layout_marginBottom="5dp" android:layout_width="match_parent" android:layout_height="wrap_content"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/tv_cancel" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="取消" android:background="@drawable/bg_item_to_alpha" android:textSize="20sp"/> <View android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/gray_3"/> <TextView android:id="@+id/tv_confirm" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="确定" android:textColor="@color/black" android:textSize="20sp"/> </LinearLayout> </LinearLayout>drawable/bg_item_to_alpha：
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@color/alpha_1" android:state_pressed="true"/> <item android:drawable="@color/alpha_1" android:state_focused="true"/> </selector>
drawable/edit_item_text_bg：
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <!--定义填充颜色--> <solid android:color="#ffffff"/> <!--定义四个角的圆角半径--> <corners android:radius="2dp"/> </shape>
MianActivity中代码：
package com.example.yk.dialogtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class EditDialogActivity extends AppCompatActivity implements EditDialog.OnDialogButtonClickListener {
private static final int REQUEST_CODE_THIRD = 3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit_dialog);
EditDialog editDialog=new EditDialog(this,"title","取消","确定",REQUEST_CODE_THIRD,this);
editDialog.show();
}
@Override
public void onDialogButtonClick(int requestCode, boolean isPositiveBtn, String s) {
if(requestCode==REQUEST_CODE_THIRD){
if(isPositiveBtn){
Toast.makeText(this, "输入的内容："+s, Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(this, "点击了取消", Toast.LENGTH_SHORT).show();
}
}
}
}效果图：
如果需要对editText输入的内容作限制，需要在EditDialog中添加如下代码：
CustomWatcher customWatcher=new CustomWatcher(); etInput.addTextChangedListener(customWatcher);CustomWatcher:
private class CustomWatcher implements TextWatcher {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
String s = editable.toString();
/**
* 不以小数点开头
*/
if(s.length() ==1 && s.contains(".")){
editable.delete(0,1);
return;
}
/**
* 不能以00开头
*/
if(s.startsWith("00")){
editable.delete(1,2);
return;
}
/**
* 整数部分最长为8位
*/
if(!s.contains(".")){
if(s.length() == 9){
editable.delete(8,9);
}
return;
}
/**
* 小数部分最多有2位
*/
if(s.contains(".")){
int start = s.indexOf("." )+ 1;
int end=s.length();
if(end-start>2){
editable.delete(start+2,s.length());
}
return;
}
}
}效果截图：LoadProgressDialog:
LoadProgressDialog中代码：package com.example.yk.dialogtest;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.widget.TextView;
/**
* Created by yk on 2017/1/18.
*/
public class LoadProgressDialog extends Dialog{
private String message;
private boolean canCancel;
public LoadProgressDialog(Context context,String message,boolean canCancel) {
super(context);
this.message=message;
this.canCancel=canCancel;
}
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_load_progress_dialog);
textView= (TextView) findViewById(R.id.tv_message);
setCancelable(canCancel);
textView.setText(message);
}
}MainActivty中代码：package com.example.yk.dialogtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class LoadProgressActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_load_progress);
LoadProgressDialog dialog=new LoadProgressDialog(this,"加载中",true);
dialog.show();
}
}R.layout.layout_load_progress_dialog为：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="280dp" android:layout_height="wrap_content" android:background="@drawable/edit_item_text_bg" android:orientation="vertical"> <TextView android:id="@+id/tv_message" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:layout_marginTop="5dp" android:layout_marginBottom="20dp" android:textSize="20sp"/> <ProgressBar android:id="@+id/progress_bar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center"/> </LinearLayout>
实现的效果：
在此基础之上，可以进一步添加自定义样式：
在LoadProgressDialog中改变的代码：
public LoadProgressDialog(Context context,String message,boolean canCancel) {
super(context,R.style.easy_dialog_style);
this.message=message;
this.canCancel=canCancel;
}自定义样式R.style.easy_dialog_style为：<style name="easy_dialog_style" parent="@android:style/Theme.Dialog"> <item name="android:windowFrame">@null</item> <!-- 边框 --> <item name="android:windowIsFloating">true</item> <!-- 是否浮现在activity之上 --> <item name="android:windowIsTranslucent">true</item> <!-- 半透明 --> <item name="android:windowNoTitle">true</item> <!-- 无标题 --> <item name="android:windowBackground">@color/transparent</item> <!-- 背景透明 --> <item name="android:backgroundDimEnabled">true</item> <!-- 后面的activity变暗 --> </style>R.layout.layout_load_progress_dialog布局为：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="280dp" android:layout_height="wrap_content" android:background="@drawable/edit_item_text_bg" android:orientation="vertical"> <TextView android:id="@+id/tv_message" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:layout_marginTop="5dp" android:layout_marginBottom="20dp" android:textSize="20sp"/> <ProgressBar android:id="@+id/progress_bar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingBottom="10dp" android:layout_gravity="center" android:indeterminateDrawable="@drawable/custom_progress_style"/> </LinearLayout>drawable/custom_progress_style：
<?xml version="1.0" encoding="utf-8"?> <animated-rotate xmlns:android="http://schemas.android.com/apk/res/android" android:drawable="@mipmap/load_dialog" android:pivotX="50%" android:pivotY="50%" />效果：
控制LoadProgressDialog显示与不显示的工具类:
LoadProgressActivity中代码：package com.example.yk.dialogtest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class LoadProgressActivity extends AppCompatActivity {
private LoadProgressDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_load_progress);
// dialog = new LoadProgressDialog(this,"加载中",true);
// dialog.show();
LoadProgressUtil.showLoadProgressDialog(this,"加载中",true);
}
}LoadProgressUtil中代码：package com.example.yk.dialogtest;
import android.content.Context;
import android.util.Log;
/**
* Created by yk on 2017/1/18.
*/
public class LoadProgressUtil {
private static LoadProgressDialog loadProgressDialog;
public static void showLoadProgressDialog(Context context,String title, boolean canCancel){
if(loadProgressDialog == null){
loadProgressDialog=new LoadProgressDialog(context,title,canCancel);
}else {
if(loadProgressDialog.isShowing()){
return;
}
}
// Log.e("context",context.toString());
// Log.e("loadProgressDialog",loadProgressDialog.getContext().toString());
loadProgressDialog.show();
}
public static void cancelProgressDialog(){
if(loadProgressDialog==null){
return;
}else {
if(loadProgressDialog.isShowing()){
loadProgressDialog.dismiss();
}else {
return;
}
}
}
public static void progressDialogIsShow(){
loadProgressDialog.isShowing();
}
}如果像上面这样写的话，会发现，在第一次取消progressDialog，并且退出当前progressDialog所在的Activity，当第二次进入该progressDialog所在的Activity时是会报错的，错误原因：Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@3d4e7354 is not valid; is your activity running?查阅资料发现，对于AlertDialog来说，是需要依赖一个View，而View是对应于Activity的。那么为什么会报错呢，这里涉及到一个生命周期的问题了。静态变量private static LoadProgressDialog loadProgressDialog;需要等到系统GC的时候才会回收，第二次进入该activity时，此时的context是新的地址，而此时的progress Dialog的context还是上次的activity的，见下图：
解决的办法是：
package com.example.yk.dialogtest;
import android.content.Context;
import android.util.Log;
/**
* Created by yk on 2017/1/18.
*/
public class LoadProgressUtil {
private static LoadProgressDialog loadProgressDialog;
public static void showLoadProgressDialog(Context context,String title, boolean canCancel){
if(loadProgressDialog == null){
loadProgressDialog=new LoadProgressDialog(context,title,canCancel);
}else if(loadProgressDialog.getContext() !=context){
cancelProgressDialog();
loadProgressDialog=new LoadProgressDialog(context,title,canCancel);
}
// Log.e("context",context.toString());
// Log.e("loadProgressDialog",loadProgressDialog.getContext().toString());
loadProgressDialog.show();
}
public static void cancelProgressDialog(){
if(loadProgressDialog==null){
return;
}else {
if(loadProgressDialog.isShowing()){
loadProgressDialog.dismiss();
loadProgressDialog=null;
}
}
}
public static boolean progressDialogIsShow(){
return (loadProgressDialog !=null && loadProgressDialog.isShowing());
}
}完整的项目源码：http://download.csdn.net/detail/qq_33748378/9740725
包含的内容：
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