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需要實現的效果圖：
一個項目所用到的對話框風格必須統一，但顯示的文字、布局卻可以不同。如果每個對話框都要重新去創建的話，會增加代碼的冗余，浪費資源。所以可以寫個類 MyDialog 繼承Dailog。需要的時候直接調用MyDialog類。
一、新建xml布局。
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:clickable="true" android:orientation="vertical" > <LinearLayout android:layout_width="250dp" android:layout_height="wrap_content" android:layout_gravity="center" android:orientation="vertical" > <TextView android:id="@+id/title" android:textSize="18dp" android:layout_width="fill_parent" android:layout_height="40dp" android:gravity="center" android:textColor="#000000" android:textStyle="bold" android:text="InPut" /> <LinearLayout android:id="@+id/content" android:layout_width="250dp" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical" > <TextView android:id="@+id/tv_message" android:layout_width="match_parent" android:layout_height="40dp" android:gravity="left|center" android:textSize="16dp" android:layout_marginBottom="5dp" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" android:textColor="#333333" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="10dp" android:layout_marginBottom="10dp" android:gravity="left|center" > <EditText android:id="@+id/et_psw_message" android:layout_width="match_parent" android:layout_height="45dp" android:gravity="left|center" android:inputType="textPassword" android:textColorHint="@color/gray" android:visibility="gone" android:maxLength="30" android:textSize="@dimen/font_14" android:background="@drawable/edit_back"> <requestFocus /> </EditText> <ImageView android:id="@+id/img_change_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_marginRight="15dp" android:layout_centerVertical="true" android:visibility="gone" android:src="@drawable/img_change_name_style" /> </RelativeLayout> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="1.0px" android:background="#ffd0d0d0" /> <LinearLayout android:layout_width="match_parent" android:layout_height="40dp" android:layout_gravity="bottom" android:background="#ffd0d0d0" android:gravity="center" android:orientation="horizontal" > <Button android:id="@+id/negativeButton" android:textSize="17dp" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:background="#ffffff" android:layout_weight="1" android:text="Cancel" /> <Button android:id="@+id/positiveButton" android:textSize="17dp" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginLeft="1px" android:background="#ffffff" android:gravity="center" android:layout_weight="1" android:text="Sure" android:textStyle="bold" android:textColor="#008ae7" /> </LinearLayout> </LinearLayout> </FrameLayout>
xml效果圖如下：
盡量將對話框要用到的所有控件在xml中排好，部分不需要的可以在代碼setVisibility(View.GONE);讓其消失，省的新建多個xml文件。
二、繼承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) {//設置信息
this.message = (String) context.getText(message);
return this;
}
public Builder setTitle(int title) { //設置標題
this.title = (String) context.getText(title);
return this;
}
public Builder setTitle(String title) {//直接傳字符串
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中創建dialog,設置標題、信息以及按鈕的處理事件
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);
}這樣就實現了項目需要的對話框效果圖，且不同的Activity的對話框可顯示不同的文字，也可以處理不同的點擊事件。
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