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Android项目实战(二十七):数据交互(信息编辑)填写总结

前言:

  项目中必定用到的数据填写需求。比如修改用户名的文字编辑对话框,修改生日的日期选择对话框等等。现总结一下,方便以后使用。

注:

  先写实现过程,想要学习的同学可以看看,不需要的同学可以直接拉到最下面复制代码使用。

 

一、文字编辑对话框

看下效果图(仿今日头条):

技术分享

包括:

一个标题TextView

一个圆角白色背景EditText

一个可输入个数提示的TextView

两个按钮,‘确定’、‘取消’ 

代码实现:

(1)编写布局文件

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<?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="wrap_content"
    android:background="@color/grey_5"
    android:id="@+id/popup_edit_info_ly"
    >
    <!--标题-->
    <TextView
        android:id="@+id/popup_edit_info_txt_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="title"
        android:gravity="center_horizontal"
        android:padding="@dimen/dp_6"
        android:textColor="@color/black"
        />
    
    <!--编辑框-->
    <EditText
        android:id="@+id/popup_edit_info_edit_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/dp_6"
        android:layout_marginRight="@dimen/dp_6"
        android:background="@drawable/bg_popup_edit"
        android:maxLength="10"
        android:padding="@dimen/dp_6"
        >
    </EditText>
    
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/dp_6"
        >
        <!--提示文字-->
        <TextView
            android:id="@+id/popup_edit_info_txt_tip"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="@dimen/txt_10"
            android:text="剩余可输入个数:"
            android:layout_centerVertical="true"
            android:layout_marginLeft="@dimen/dp_6"
            />
        
        <!--确定按钮,这里用TextView ,当然也可以用Button ImageButton-->
        <TextView
            android:id="@+id/popup_edit_info_btn_confirm"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/confirm"
            android:background="@drawable/bg_btn_blue"
            android:padding="@dimen/dp_4"
            android:textColor="@color/white"
            android:layout_alignParentRight="true"
            />

        <!--取消按钮-->
        <TextView
            android:id="@+id/popup_edit_info_btn_cancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/cancel"
            android:background="@drawable/bg_btn_grey"
            android:padding="@dimen/dp_4"
            android:textColor="@color/white"
            android:layout_toLeftOf="@id/popup_edit_info_btn_confirm"
            android:layout_marginRight="@dimen/dp_10"
            />
    </RelativeLayout>

</LinearLayout>
dialog_edit_txt

里面编辑框EditView涉及到了圆角白色背景 需要写一个drawable文件

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<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--popupwindow 编辑框的背景颜色 用于popup_edit_info.xml布局文件-->
    <solid android:color="@color/white" ></solid>
    <corners android:radius="@dimen/dp_6"></corners>
    <stroke android:width="0.5dp" android:color="@color/grey_1"></stroke>
</shape>
bg_popup_edit

(2)、在activity或者fragment中使用

  ①、这里我把对话框写在一个方法里,方便使用

title 文本对话框的标题
isSingleLine EditText是否限制一行显示
maxSize EditText中文字的最大长度
textview 修改的TextView控件,首先要讲该控件的文本显示在EditText中,点击确定后需要将编辑文本显示在改控件中

private
void showEditDialog(String title , boolean isSingleLine , final int maxSize, final TextView textview)

  ②、根据布局文件生成view 并 初始化控件

     View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_txt, null);
        TextView popup_edit_info_txt_title;//标题
        final TextView popup_edit_info_txt_tip;       //编辑框剩余个数提示
        TextView popup_edit_info_btn_cancel;    //取消按钮
        TextView popup_edit_info_btn_confirm;    //确定按钮
        final EditText popup_edit_info_edit_content;   //编辑框
        popup_edit_info_txt_title = (TextView) view.findViewById(R.id.popup_edit_info_txt_title);
        popup_edit_info_txt_tip = (TextView) view.findViewById(R.id.popup_edit_info_txt_tip);
        popup_edit_info_btn_cancel = (TextView) view.findViewById(R.id.popup_edit_info_btn_cancel);
        popup_edit_info_btn_confirm = (TextView) view.findViewById(R.id.popup_edit_info_btn_confirm);
        popup_edit_info_edit_content = (EditText) view.findViewById(R.id.popup_edit_info_edit_content);

  ③、进行控件的属性设置

     popup_edit_info_edit_content.setText(textview.getText().toString());            // 将参数textview的文本数据显示在EditText中
        popup_edit_info_edit_content.setSingleLine(isSingleLine);                       // 设置EditView是否单行,像用户名这种信息需要单行,像评价简介这种的不需要单行
        popup_edit_info_edit_content.setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxSize)}); // 设置EditText的最大长度,当输入超过这个值的时候不在允许输入
        popup_edit_info_txt_tip.setText("剩余可输入个数:"+(maxSize-textview.getText().toString().length()));        // 设置 剩余文字个数提示
final AlertDialog dialog = new AlertDialog.Builder(this) //创建对话框 .setView(view) .create(); popup_edit_info_txt_title.setText(title); // 设置标题
     dialog.setCanceledOnTouchOutside(false);                                         // 设置点击屏幕Dialog不消失

  ④、进行EditText的设置 ,监听文字数据字数变化,改变提示文本的内容

      popup_edit_info_edit_content.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
            }
            @Override
            public void afterTextChanged(Editable s) {
                int length = s.length();
                popup_edit_info_txt_tip.setText("剩余可输入个数:"+(maxSize-length));
            }
        });

  ⑤、设置‘确定’、‘取消’点击事件

popup_edit_info_btn_cancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        popup_edit_info_btn_confirm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                textview.setText(popup_edit_info_edit_content.getText().toString());
                dialog.dismiss();
            }
        });

  ⑥、显示对话框

dialog.show();

 

 二、日期选择对话框(未完待续)

 ......

 ......

 ......

 

 

 

 

---------------------------------------------------------------------------------------------------------------------

完整代码:

一、文字编辑对话框

布局文件:

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<?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="wrap_content"
    android:background="@color/grey_5"
    android:id="@+id/popup_edit_info_ly"
    >
    <!--标题-->
    <TextView
        android:id="@+id/popup_edit_info_txt_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="title"
        android:gravity="center_horizontal"
        android:padding="@dimen/dp_6"
        android:textColor="@color/black"
        />

    <!--编辑框-->
    <EditText
        android:id="@+id/popup_edit_info_edit_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="@dimen/dp_6"
        android:layout_marginRight="@dimen/dp_6"
        android:background="@drawable/bg_popup_edit"
        android:maxLength="10"
        android:padding="@dimen/dp_6"
        >
    </EditText>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/dp_6"
        >
        <!--提示文字-->
        <TextView
            android:id="@+id/popup_edit_info_txt_tip"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="@dimen/txt_10"
            android:text="剩余可输入个数:"
            android:layout_centerVertical="true"
            android:layout_marginLeft="@dimen/dp_6"
            />

        <!--确定按钮,这里用TextView ,当然也可以用Button ImageButton-->
        <TextView
            android:id="@+id/popup_edit_info_btn_confirm"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/confirm"
            android:background="@drawable/bg_btn_blue"
            android:padding="@dimen/dp_4"
            android:textColor="@color/white"
            android:layout_alignParentRight="true"
            />

        <!--取消按钮-->
        <TextView
            android:id="@+id/popup_edit_info_btn_cancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/cancel"
            android:background="@drawable/bg_btn_grey"
            android:padding="@dimen/dp_4"
            android:textColor="@color/white"
            android:layout_toLeftOf="@id/popup_edit_info_btn_confirm"
            android:layout_marginRight="@dimen/dp_10"
            />
    </RelativeLayout>

</LinearLayout>
dialog_edit_txt

drawable文件: 用于设置EditText圆角白色背景

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<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--popupwindow 编辑框的背景颜色 用于popup_edit_info.xml布局文件-->
    <solid android:color="@color/white" ></solid>
    <corners android:radius="@dimen/dp_6"></corners>
    <stroke android:width="0.5dp" android:color="@color/grey_1"></stroke>
</shape>
bg_popup_edit

java文件:

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showEditDialog("请填写姓名",true,10,edit_info_txt_name);

    private void showEditDialog(String title , boolean isSingleLine , final int maxSize, final TextView textview) {

        View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_txt, null);
        TextView popup_edit_info_txt_title;//标题
        final TextView popup_edit_info_txt_tip;       //编辑框剩余个数提示
        TextView popup_edit_info_btn_cancel;    //取消按钮
        TextView popup_edit_info_btn_confirm;    //确定按钮
        final EditText popup_edit_info_edit_content;   //编辑框
        popup_edit_info_txt_title = (TextView) view.findViewById(R.id.popup_edit_info_txt_title);
        popup_edit_info_txt_tip = (TextView) view.findViewById(R.id.popup_edit_info_txt_tip);
        popup_edit_info_btn_cancel = (TextView) view.findViewById(R.id.popup_edit_info_btn_cancel);
        popup_edit_info_btn_confirm = (TextView) view.findViewById(R.id.popup_edit_info_btn_confirm);
        popup_edit_info_edit_content = (EditText) view.findViewById(R.id.popup_edit_info_edit_content);
        popup_edit_info_edit_content.setText(textview.getText().toString());
        popup_edit_info_edit_content.setSingleLine(isSingleLine);
        popup_edit_info_edit_content.setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxSize)});
        popup_edit_info_txt_tip.setText("剩余可输入个数:"+(maxSize-textview.getText().toString().length()));
        final AlertDialog dialog = new AlertDialog.Builder(this)
                .setView(view)
                .create();
        popup_edit_info_txt_title.setText(title);

        popup_edit_info_edit_content.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
            }
            @Override
            public void afterTextChanged(Editable s) {
                int length = s.length();
                popup_edit_info_txt_tip.setText("剩余可输入个数:"+(maxSize-length));
            }
        });
        popup_edit_info_btn_cancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        popup_edit_info_btn_confirm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                textview.setText(popup_edit_info_edit_content.getText().toString());
                dialog.dismiss();
            }
        });
        dialog.setCanceledOnTouchOutside(false);// 设置点击屏幕Dialog不消失
        dialog.show();

    }
java

效果图:

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Android项目实战(二十七):数据交互(信息编辑)填写总结