自定义dialog基础版
很多时候,我们在使用android sdk提供的alerdialog的时候,会因为你的系统的不同而产生不同的效果,就好比如你刷的是MIUI的系统,弹出框都会在顶部显示!这里简单的介绍自定义弹出框的应用。
首先创建布局文件dialog:
代码:
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<? xml version = "1.0" encoding = "utf-8" ?>
android:layout_width = "match_parent"
android:layout_height = "match_parent"
android:orientation = "vertical" >
< EditText
android:id = "@+id/edit"
android:layout_width = "250dip"
android:layout_height = "wrap_content"
/>
< Button
android:id = "@+id/clickbtn"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:text = "click me" />
</ LinearLayout >
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其次创建MyCustomDialog类继承Dialog:
代码:
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package com.xzw.custom.dialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
/** * 自定义dialog */ public class MyCustomDialog extends Dialog {
//定义回调事件,用于dialog的点击事件
public interface OnCustomDialogListener{
public void back(String name);
}
private String name;
private OnCustomDialogListener customDialogListener;
EditText etName;
public MyCustomDialog(Context context,String name,OnCustomDialogListener customDialogListener) {
super (context);
this .name = name;
this .customDialogListener = customDialogListener;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.dialog);
//设置标题
setTitle(name);
etName = (EditText)findViewById(R.id.edit);
Button clickBtn = (Button) findViewById(R.id.clickbtn);
clickBtn.setOnClickListener(clickListener);
}
private View.OnClickListener clickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
customDialogListener.back(String.valueOf(etName.getText()));
MyCustomDialog. this .dismiss();
}
};
} |
最后再完成MainActivity:
代码:
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package com.xzw.custom.dialog;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private TextView resultText;
@Override
public void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.main);
resultText = (TextView) findViewById(R.id.result);
Button showDialogBtn = (Button) findViewById(R.id.showdialog);
showDialogBtn.setOnClickListener( this );
}
@Override
public void onClick(View v) {
MyCustomDialog dialog = new MyCustomDialog( this , "Enter your name" , new MyCustomDialog.OnCustomDialogListener() {
@Override
public void back(String name) {
resultText.setText( "Enter name is " +name);
}
});
dialog.show();
}
} |
效果如图:
炫酷升级版
在日常开发过程中,Android自带的对话框控件美观程度远远满足不了开发的要求,特别是相对于移植开发,下面描述的demo是基于1280X720分辨率实现的效果。
自定义对话框和上次记录的自定义RatingBar非常类似,都是通过在styles.xml里面继承父类(此处是Dialog)的样式。
styles.xml
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< style name = "NoticeDialog" 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" >false</ item > <!--半透明-->
< item name = "android:windowNoTitle" >true</ item > <!--无标题-->
< item name = "android:windowBackground" >@drawable/tck_bg</ item > <!--背景透明-->
< item name = "android:backgroundDimEnabled" >false</ item > <!--模糊-->
</ style >
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我们下面将要做下面三个效果:
(1)带选择确认框的提示
(2)图片+文字的提示
(3)图片+图片
实现上面三个效果我们只需要继承一个Dialog类,然后根据不同的布局添加相对应的xml布局就可以简单实现功能扩展的效果了。
1.继承Dialog类,重写父类的方法,并添加子类自己的方法。
NoticeDialog.java,继承于Dialog父类,实现了点击事件的接口,如果有确认选择框,则把确认选择框的控件添加click事件监听,通过在回调方法在UI主线程里面实现界面更新和逻辑操作。
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package com.zlc.dialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
public class NoticeDialog extends Dialog implements OnClickListener{
Context context;
private NoticeDialogListener listener;
//对话框事件监听接口,用于处理回调点击事件
public interface NoticeDialogListener {
public void onClick(View view);
}
public NoticeDialog(Context context) {
super (context);
// TODO Auto-generated constructor stub
this .context = context;
}
public NoticeDialog(Context context, int theme){
super (context, theme);
this .context = context;
}
public NoticeDialog(Context context, int theme,NoticeDialogListener listener){
super (context, theme);
this .context = context;
this .listener = listener;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
TextView enter = (TextView)findViewById(R.id.dialog_enter); //确定控件
TextView cancel = (TextView)findViewById(R.id.dialog_cancle); //取消控件
if (enter != null && cancel != null ){ //如果是不带确认选择框,不做事件监听操作
enter.setOnClickListener( this );
cancel.setOnClickListener( this );
enter.requestFocus();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
listener.onClick(v);
}
} |
2.对应上面三个效果,添加不同的xml布局。
(1)带选择确认框的提示dialog_notice_choise.xml
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<? xml version = "1.0" encoding = "utf-8" ?>
android:orientation = "vertical"
android:layout_width = "652dp"
android:layout_height = "352dp"
>
< LinearLayout
android:layout_width = "500dp"
android:layout_height = "200dp"
android:layout_marginLeft = "76dp"
android:layout_marginTop = "76dp"
android:orientation = "vertical"
android:background = "@drawable/tck01" >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "5dp"
android:layout_marginLeft = "10dp"
>
< TextView
android:textSize = "26sp"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:textColor = "@color/dialog_title"
android:text = "@string/dialog_title"
android:focusable = "false"
/>
</ LinearLayout >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "40dp"
android:gravity = "center"
>
< TextView
android:id = "@+id/notice_value"
android:textSize = "32sp"
android:layout_marginLeft = "10dp"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:textColor = "@color/dialog_content"
android:text = "@string/dialog_uninstall"
android:focusable = "false"
/>
</ LinearLayout >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "44dp"
android:layout_marginTop = "35dp"
android:layout_marginLeft = "4dp"
>
< TextView
android:id = "@+id/dialog_enter"
android:textSize = "25sp"
android:layout_width = "246dp"
android:layout_height = "fill_parent"
android:text = "@string/dialog_enter"
android:gravity = "center"
android:textColor = "@drawable/app_manager_dialog_textcolor"
android:background = "@drawable/app_manager_dialog_btn_color"
android:focusable = "true"
/>
< TextView
android:id = "@+id/dialog_cancle"
android:textSize = "25sp"
android:layout_width = "246dp"
android:layout_height = "fill_parent"
android:text = "@string/dialog_cancel"
android:gravity = "center"
android:textColor = "@drawable/app_manager_dialog_textcolor"
android:background = "@drawable/app_manager_dialog_btn_color"
android:focusable = "true"
/>
</ LinearLayout >
</ LinearLayout >
</ LinearLayout >
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(2)图片+文字的提示dialog_notice_ing.xml
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<? xml version = "1.0" encoding = "utf-8" ?>
android:orientation = "vertical"
android:layout_width = "652dp"
android:layout_height = "352dp"
>
< LinearLayout
android:layout_width = "500dp"
android:layout_height = "200dp"
android:layout_marginLeft = "76dp"
android:layout_marginTop = "76dp"
android:orientation = "vertical"
android:background = "@drawable/tck01" >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "5dp"
android:layout_marginLeft = "10dp"
>
< TextView
android:textSize = "26sp"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:textColor = "@color/dialog_title"
android:text = "@string/dialog_title"
/>
</ LinearLayout >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "50dp"
android:gravity = "center"
>
< ImageView
android:layout_width = "38dp"
android:layout_height = "42dp"
android:src = "@drawable/uninstall_icon" />
< TextView
android:id = "@+id/dialog_in_msg"
android:textSize = "32sp"
android:layout_marginLeft = "10dp"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:textColor = "@color/dialog_content"
android:text = "@string/dialog_uninstall_in"
/>
</ LinearLayout >
</ LinearLayout >
</ LinearLayout >
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(3)图片+图片dialog_notice_finish.xml
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<? xml version = "1.0" encoding = "utf-8" ?>
android:orientation = "vertical"
android:layout_width = "652dp"
android:layout_height = "352dp"
>
< LinearLayout
android:layout_width = "500dp"
android:layout_height = "200dp"
android:layout_marginLeft = "76dp"
android:layout_marginTop = "76dp"
android:orientation = "vertical"
android:background = "@drawable/tck01" >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "5dp"
android:layout_marginLeft = "10dp"
>
< TextView
android:textSize = "26sp"
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:textColor = "@color/dialog_title"
android:text = "@string/dialog_title"
/>
</ LinearLayout >
< LinearLayout
android:layout_width = "fill_parent"
android:layout_height = "wrap_content"
android:layout_marginTop = "40dp"
android:gravity = "center"
>
< ImageView
android:layout_width = "66dp"
android:layout_height = "67dp"
android:src = "@drawable/cg" />
< ImageView
android:id = "@+id/dialog_finish_img"
android:layout_marginLeft = "20dp"
android:layout_width = "165dp"
android:layout_height = "36dp"
android:src = "@drawable/uninstall_ok"
/>
</ LinearLayout >
</ LinearLayout >
</ LinearLayout >
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3.在MainActivity实现对自定义对话框的添加显示。
MainActivity.java,在进行对话框切换显示的时候,只需要设置不同的xml配置文件就行了。(注意:NoticeDialog里面的构造方法的context参数只能是XXXActivity.this,不能是通过getApplicationContext获取的context对象)
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package com.zlc.dialog;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import com.zlc.dialog.NoticeDialog.NoticeDialogListener;
public class MainActivity extends Activity {
private Context context;
private NoticeDialog notiDialog;
int count = 0 ;
Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.main);
context = getApplicationContext();
notiDialog = new NoticeDialog(MainActivity. this ,
R.style.NoticeDialog, new NoticeDialogListener() {
@Override
public void onClick(View view) {
try {
if (view.getId() == R.id.dialog_enter){
notiDialog.dismiss();
//TODO 购买
}
notiDialog.dismiss();
} catch (Exception e) {
e.printStackTrace();
}
}
});
notiDialog.setContentView(R.layout.dialog_notice_choise);
notiDialog.show();
Timer timer = new Timer();
handler = new Myhandler();
timer.schedule( new TimerTask() {
@Override
public void run() {
// TODO Auto-generated method stub
count = count % 4 ;
notiDialog.cancel();
handler.sendEmptyMessage(count);
count ++;
}
}, 3000 , 3000 );
}
private class Myhandler extends Handler{
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
switch (msg.what) {
case 0 :
notiDialog.setContentView(R.layout.dialog_notice_ing);
break ;
case 1 :
notiDialog.setContentView(R.layout.dialog_notice_finish);
break ;
case 2 :
notiDialog.setContentView(R.layout.dialog_notice_choise);
break ;
default :
break ;
}
notiDialog.show();
}
}
} |