先上个效果图 ，也可以根据自己需求，添加控件，也可以根据这种思路，自己去修改布局文件。
最后会给出源码githup地址。
然后开始吧。
首先在styles文件里定义样式。
<style name="AlertDialogStyle" parent="@android:style/Theme.Dialog">
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowFrame">@null</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsTranslucent">true</item>
</style>
接着再drawable文件夹下自定义一个圆角的shape.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- radius 为圆角半径 -->
<corners android:radius="20dp" ></corners>
<solid android:color="#ffffff" />
</shape>
然后自定义一个dialog的xml布局, 并且设置背景引用圆角shape。
android:background="@drawable/bg_course_dialog"
布局文件代码如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_course_dialog"
>
<ImageView
android:id="@+id/icon"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_marginTop="28dp"
android:layout_toLeftOf="@+id/title"
android:src="@mipmap/ic_launcher_round"
android:visibility="gone"
/>
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginLeft="5dp"
android:layout_marginTop="25dp"
android:textColor="#000000"
android:textSize="20sp"
android:textStyle="bold"
tools:text="titletitletitle"
/>
<LinearLayout
android:id="@+id/ll_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/title"
android:layout_gravity="center_horizontal"
android:layout_marginBottom="25dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="5dp"
android:gravity="center"
android:orientation="vertical"
>
<TextView
android:id="@+id/message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#000000"
android:textSize="16sp"
tools:text="message"/>
</LinearLayout>
<View
android:id="@+id/line_horizontal"
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:layout_below="@+id/ll_content"
android:visibility="gone"
android:background="#dad6d6"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/line_horizontal"
android:orientation="horizontal">
<TextView
android:id="@+id/dialog_cancel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:clickable="true"
android:gravity="center"
android:text="取消"
android:textColor="#007aff"
android:textSize="18sp"
android:visibility="gone"/>
<View
android:id="@+id/line_vertical"
android:layout_width="0.5dp"
android:layout_height="match_parent"
android:background="#dad6d6"
android:visibility="gone"/>
<TextView
android:id="@+id/dialog_commit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:layout_weight="1"
android:gravity="center"
android:text="确认"
android:textColor="#007aff"
android:textSize="18sp"
android:visibility="gone"/>
</LinearLayout>
</RelativeLayout>
然后是封装的具体代码。
这里使用alertdialog中的建造者模式Builder来建造，这样可以方便我们建造不同需求的dialog。（如对建造者模式不了解的可以自己搜一下相关资料）
代码很简单 首先是构造一个Params来管理我们具体要build的属性。
public static class Builder implements BuilderInterface {
private Context mContext;
private final ControllerParams mParams;
private Controller mController;
public Builder(Context context) {
mContext = context;
mParams = new ControllerParams();
mController = new Controller(mContext);
}
public Builder setContentView(int layoutId) {
mParams.setLayoutId(layoutId);
return this;
}
public Builder setContentView(View view) {
mParams.setContentView(view);
return this;
}
public Builder setTitle(String title) {
mParams.setTitle(title);
return this;
}
public Builder reSetTitle(String title) {
mParams.setTitle(title);
mController.setTitle(title);
return this;
}
public Builder reSetMessage(String message) {
mParams.setMessage(message);
mController.setMessage(message);
return this;
}
public Builder reSetIcon(int iconId) {
mParams.setIconId(iconId);
mController.setIcon(iconId);
return this;
}
public Builder setMessage(String message) {
mParams.setMessage(message);
return this;
}
public Builder setIcon(int iconId) {
mParams.setIconId(iconId);
return this;
}
public Builder setCancelable(boolean cancelable) {
mParams.setCancelable(cancelable);
return this;
}
public Builder setNegativeButton(String text, OnNegativeListener listener) {
mParams.setNegativeListener(listener);
mParams.setNegativeText(text);
return this;
}
public Builder setPositiveButton(String text, OnPositiveListener listener) {
mParams.setPositiveListener(listener);
mParams.setPositiveText(text);
return this;
}
/**
* 建造dialog
* @return dialog
*/
public Dialog create() {
Dialog dialog = new Dialog(mContext, R.style.AlertDialogStyle);
//属性交给controller去应用到dialog上
mParams.apply(mController, dialog);
return dialog;
}
/**
* 建造一个默认的dialog
* @param onPositiveListener 确认按键监听
* @param onNegativeListener 取消按键监听
* @return dialog
*/
public Dialog createDefault(OnPositiveListener onPositiveListener, OnNegativeListener onNegativeListener) {
Dialog dialog = new Dialog(mContext, R.style.AlertDialogStyle);
build(onPositiveListener, onNegativeListener);
mParams.apply(mController, dialog);
return dialog;
}
private void build(OnPositiveListener onPositiveListener, OnNegativeListener onNegativeListener) {
setTitle("温馨提示")
.setMessage("确认提交吗")
.setCancelable(false)
.setPositiveButton("确认", onPositiveListener)
.setNegativeButton("取消", onNegativeListener);
}
}
管理属性的类核心方法就是apply(),在这里判断是否缓存了属性，有的话就交给controller去设置给dialog.
/**
* 管理dialog所有属性的类
*/
private static class ControllerParams {
private String mTitle;
private String mMessage;
private int mIconId = -1;
private int mLayoutId = -1;
private boolean mCancelable;
private String mPositiveText;
private String mNegativeText;
private OnPositiveListener mPositiveListener;
private OnNegativeListener mNegativeListener;
private View mContentView;
private void apply(Controller controller, Dialog dialog) {
if (mContentView != null) {
controller.setContentView(mContentView, dialog);
}else {
controller.setContentView(mLayoutId, dialog);
}
dialog.setCancelable(mCancelable);
if (mCancelable) {
dialog.setCanceledOnTouchOutside(true);
}
if (mTitle != null) {
controller.setTitle(mTitle);
}
if (mMessage != null) {
controller.setMessage(mMessage);
}
if (mPositiveText != null && mPositiveListener != null) {
controller.setPositiveButton(mPositiveText, mPositiveListener);
}
if (mNegativeText != null && mNegativeListener != null) {
controller.setNegativeButton(mNegativeText, mNegativeListener);
}
if (mIconId != -1) {
controller.setIcon(mIconId);
}
}
public int getLayoutId() {
return mLayoutId;
}
private void setLayoutId(int layoutId) {
mLayoutId = layoutId;
}
public String getTitle() {
return mTitle;
}
private void setTitle(String title) {
mTitle = title;
}
public String getMessage() {
return mMessage;
}
private void setMessage(String message) {
mMessage = message;
}
public int getIconId() {
return mIconId;
}
private void setIconId(int iconId) {
mIconId = iconId;
}
public boolean isCancelable() {
return mCancelable;
}
private void setCancelable(boolean cancelable) {
mCancelable = cancelable;
}
public String getPositiveText() {
return mPositiveText;
}
private void setPositiveText(String positiveText) {
mPositiveText = positiveText;
}
public String getNegativeText() {
return mNegativeText;
}
private void setNegativeText(String negativeText) {
mNegativeText = negativeText;
}
public OnPositiveListener getPositiveListener() {
return mPositiveListener;
}
private void setPositiveListener(OnPositiveListener positiveListener) {
mPositiveListener = positiveListener;
}
public OnNegativeListener getNegativeListener() {
return mNegativeListener;
}
private void setNegativeListener(OnNegativeListener negativeListener) {
mNegativeListener = negativeListener;
}
private void setContentView(View contentView) {
mContentView = contentView;
}
}
这里定义2个点击监听，用来回调dialog中确认和取消的点击。
/**
* 确认按键监听
*/
public interface OnPositiveListener {
void onPositive(Dialog dialog);
}
/**
* 取消按键监听
*/
public interface OnNegativeListener {
void onNegative(Dialog dialog);
}
这里controller中封装了最主要的代码，代码很简单，就是将上面写的dialog的 xml布局文件inflate出来设置给dialog，这也是封装好的默认的dialog 就跟一开始的效果图一样。
但是我们说了，我们有可能有其他需求，这时候就需要用builder.setcontentview将我们需要的具体的view或者layoutid传进来，这时候看代码，我们布局文件中的根布局ll_content就会将默认的message的textview remove掉，然后再把传进来的view添加进来，这就实现定制其他需求的View。
private static class Controller implements View.OnClickListener,BuilderInterface {
private Context mContext;
private TextView mTvTitle;
private TextView mTvMessage;
private TextView mTvPositive;
private TextView mTvNegative;
private ImageView mIvIcon;
private View mHorizontalLine;
private View mVerticalLine;
private View mRootView;
private OnNegativeListener mOnNegativeListener;
private OnPositiveListener mOnPositiveListener;
private Dialog mDialog;
private View mContentView;
private final LinearLayout mLlContent;
private Controller(Context context) {
mContext = context;
mRootView = View.inflate(mContext, R.layout.view_dialog_warm_tip, null);
mLlContent = (LinearLayout) mRootView.findViewById(R.id.ll_content);
mHorizontalLine = mRootView.findViewById(R.id.line_horizontal);
}
private void setContentView(int layoutResID, Dialog dialog) {
if (layoutResID == -1) {
} else {
mContentView = View.inflate(mContext, layoutResID, null);
mLlContent.removeAllViews();
mLlContent.addView(mContentView);
}
mDialog = dialog;
dialog.setContentView(mRootView, getPrams(mContext));
}
private void setContentView(View view, Dialog dialog) {
mLlContent.removeAllViews();
mLlContent.addView(view);
mDialog = dialog;
dialog.setContentView(mRootView, getPrams(mContext));
}
private FrameLayout.LayoutParams getPrams(Context context) {
WindowManager windowManager = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
Display sDefaultDisplay = windowManager.getDefaultDisplay();
return new FrameLayout.LayoutParams(
(int) (sDefaultDisplay.getWidth() * 0.80f),
ViewGroup.LayoutParams.WRAP_CONTENT);
}
public Controller setTitle(String title) {
mTvTitle = (TextView) mRootView.findViewById(R.id.title);
if (mTvTitle != null) {
mTvTitle.setText(title);
}
return this;
}
public Controller setMessage(String message) {
mTvMessage = (TextView) mRootView.findViewById(R.id.message);
if (mTvMessage != null) {
mTvMessage.setText(message);
}
return this;
}
public Controller setIcon(int iconId) {
mIvIcon = (ImageView) mRootView.findViewById(R.id.icon);
if (mIvIcon != null) {
mIvIcon.setImageResource(iconId);
mIvIcon.setVisibility(View.VISIBLE);
}
return this;
}
@Override
public BuilderInterface setCancelable(boolean cancelable) {
return null;
}
public Controller setNegativeButton(String negativeText, OnNegativeListener listener) {
mTvNegative = (TextView) mRootView.findViewById(R.id.dialog_cancel);
mVerticalLine = mRootView.findViewById(R.id.line_vertical);
if (mTvNegative != null) {
mTvNegative.setVisibility(View.VISIBLE);
mTvNegative.setText(negativeText);
setOnNegativeListener(listener);
mHorizontalLine.setVisibility(View.VISIBLE);
if (mTvPositive != null) {
mVerticalLine.setVisibility(View.VISIBLE);
}
}
return this;
}
public Controller setPositiveButton(String positiveText, OnPositiveListener listener) {
mTvPositive = (TextView) mRootView.findViewById(R.id.dialog_commit);
if (mTvPositive != null) {
mTvPositive.setVisibility(View.VISIBLE);
mTvPositive.setText(positiveText);
setOnPositiveListener(listener);
mHorizontalLine.setVisibility(View.VISIBLE);
}
return this;
}
private Controller setOnNegativeListener(OnNegativeListener onNegativeListener) {
mOnNegativeListener = onNegativeListener;
mTvNegative.setOnClickListener(this);
return this;
}
private Controller setOnPositiveListener(OnPositiveListener onPositiveListener) {
mOnPositiveListener = onPositiveListener;
mTvPositive.setOnClickListener(this);
return this;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.dialog_cancel:
if (mOnNegativeListener != null) {
mOnNegativeListener.onNegative(mDialog);
}
break;
case R.id.dialog_commit:
if (mOnPositiveListener != null) {
mOnPositiveListener.onPositive(mDialog);
}
break;
}
}
}
到这里dialog的封装就完了，接下来看看activity中怎么使用。
使用方法就跟alertdialog一样。
private void initDefaultDialog() {
SherlockDialog.Builder builder = new SherlockDialog.Builder(this);
mDialog = builder.createDefault(this, this);
// builder.reSetTitle("重新设置Tiltle");
}
private void initEditDialog() {
SherlockDialog.Builder builder = new SherlockDialog.Builder(this);
EditText editText = new EditText(this);
builder.setContentView(editText);
mDialog = builder.createDefault(this, this);
}
private void initDialog() {
SherlockDialog.Builder builder = new SherlockDialog.Builder(this);
mDialog = builder.setTitle("温馨提示")
.setMessage("确认提交吗？")
.setPositiveButton("确认", new SherlockDialog.OnPositiveListener() {
@Override
public void onPositive(Dialog dialog) {
Toast.makeText(DialogActivity.this, "确认提交", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
})
.setNegativeButton("取消", new SherlockDialog.OnNegativeListener() {
@Override
public void onNegative(Dialog dialog) {
Toast.makeText(DialogActivity.this, "取消提交", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
})
.setIcon(R.mipmap.ic_launcher_round).create();
}
public void button1(View view) {
initDialog();
mDialog.show();
}
public void button2(View view) {
initEditDialog();
mDialog.show();
}
public void button3(View view) {
initDefaultDialog();
mDialog.show();
}
@Override
public void onPositive(Dialog dialog) {
dialog.dismiss();
}
@Override
public void onNegative(Dialog dialog) {
dialog.dismiss();
}
可以看到跟系统自带的alertdialog的builder方法使用是一样的。
githup源码地址：
https://github.com/DarkSherlock/DialogBuilder
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