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android脚步---不同界面之间切换
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对于一个app，可能需要多个界面，使用Button或者其他控件在不同界面之间切换，那么如何做到呢
首先必须明确，一般一个activity.java文件一般只对应一个界面即一个layout.xml文件，还有可能是在一个界面上再引入一个半屏或者全屏，这样需要用到一些手段，例子在下面放出来。
通常需要新建一个java文件，然后进行处理，新建java文件过程如下：New-class-
输入Name，选择继承的类，一般都是选择最通用的安卓原生的activity类，finish之后得到一个新的java文件，为了方便，可以右键，source-override，选择方法重载，比如，oncreate 等
以自己接触到的代码为例：
mTestDialog = new CustomDialog.Builder(this).create(testView2,
R.style.FullScreenDialog, Gravity.NO_GRAVITY);
mTestDialog.show();
引入一个全屏文件，新建一个CustomDialog.Builder,建立一个testvie2的全屏xml文件的关联dialog，然后显示这个dialog，
CustomDialog.java文件
package com.leadcore.uudatoutie.ui; import com.leadcore.uudatoutie.PhotoUI;
import com.leadcore.uudatoutie.R;
import com.leadcore.uudatoutie.util.LogMan; import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.drawable.Drawable;
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; /**
*
* Create custom Dialog windows for your application
* Custom dialogs rely on custom layouts wich allow you to
* create and use your own look & feel.
*
* Under GPL v3 : http://www.gnu.org/licenses/gpl-3.0.html
*
* @author antoine vianey
*
*/
public class CustomDialog extends Dialog {
private static final String TAG = "CustomDialog"; private static View layout; public CustomDialog(Context context, int theme) {
super(context, theme);
} public CustomDialog(Context context) {
super(context);
} @Override
public void setTitle(CharSequence title) {
((TextView) layout.findViewById(R.id.title)).setText(title);
} public void setIcon(Drawable drawable) {
((TextView) layout.findViewById(R.id.title)).setCompoundDrawables(drawable, null, null, null);
} /**
* 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 DialogInterface.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,
DialogInterface.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,
DialogInterface.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,
// DialogInterface.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,
// DialogInterface.OnClickListener listener) {
// this.negativeButtonText = negativeButtonText;
// this.negativeButtonClickListener = listener;
// return this;
// } /**
* Create the custom dialog
*/
public CustomDialog create(View view, int style, int gravity) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// instantiate the dialog with the custom Theme
final CustomDialog dialog = new CustomDialog(context, style);
layout = view;
// diaLogMan.addContentView(layout, new LayoutParams(
// LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
// set the dialog title
if(title!=null){
((TextView) layout.findViewById(R.id.title)).setText(title);
}
// set the confirm button
if (positiveButtonText != null) {
((Button) layout.findViewById(R.id.cancelButton))
.setText(positiveButtonText);
if (positiveButtonClickListener != null) {
((Button) layout.findViewById(R.id.cancelButton))
.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
LogMan.e(TAG,"positiveButtonClickListener");
positiveButtonClickListener.onClick(
dialog,
DialogInterface.BUTTON_POSITIVE);
dialog.dismiss();
}
});
}
} else {
// // if no confirm button just set the visibility to GONE
// layout.findViewById(R.id.cancelButton).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.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
}
dialog.getWindow().setGravity(gravity);
dialog.setContentView(layout);
return dialog;
} } }
如何在其他应用里面仿照这个方法不单要CustomDialog.java文件，还需要扩展Custom-dialog.xml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="fill_parent"
android:layout_height="wrap_content"> <LinearLayout
android:orientation="vertical"
android:background="@drawable/photoframe_title"
android:layout_width="fill_parent"
android:layout_height="@dimen/dialog_title_height"
android:gravity="center_vertical"> <TextView
android:id="@+id/title"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:layout_height="wrap_content"
style="@style/MyDialogTitle"/> </LinearLayout> <LinearLayout
android:id="@+id/content"
android:orientation="horizontal"
android:background="@android:color/white"
android:paddingTop="10dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"> <TextView
android:id="@+id/share_weixin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="5dip"
android:drawableTop="@drawable/share_weixin"
android:text="@string/review_share_weixin"
android:gravity="center_horizontal"
android:textColor="@color/text_dialog_button_title"
android:background="@drawable/bg_pressed"/>
<TextView
android:id="@+id/share_weixin_guys"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="5dip"
android:drawableTop="@drawable/share_weixin_guys"
android:text="@string/review_share_weixin_guys"
android:gravity="center_horizontal"
android:textColor="@color/text_dialog_button_title"
android:background="@drawable/bg_pressed"/>
<TextView
android:id="@+id/share_sina"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="5dip"
android:drawableTop="@drawable/share_sina"
android:text="@string/review_share_sina"
android:gravity="center_horizontal"
android:textColor="@color/text_dialog_button_title"
android:background="@drawable/bg_pressed"/>
<TextView
android:id="@+id/share_more"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="5dip"
android:drawableTop="@drawable/share_more"
android:text="@string/review_share_more"
android:gravity="center_horizontal"
android:textColor="@color/text_dialog_button_title"
android:background="@drawable/bg_pressed"/>
</LinearLayout> <LinearLayout
android:orientation="horizontal"
android:background="@android:color/white"
android:layout_width="fill_parent"
android:layout_height="wrap_content"> <Button
android:id="@+id/cancelButton"
android:layout_width="match_parent"
style="@style/MyDialogButton"
/>
</LinearLayout> </LinearLayout>
