仿快拍二维码的手动输码页面_manualinputselection-优快云博客

本文介绍了一个Android应用，该应用允许用户通过手动输入和编辑实现特定功能的代码选择，支持快速插入预定义代码片段，并提供了长按删除功能，限制最大输入字符数为16个。

源码：

package com.ejoyshop.android;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.os.Bundle;
import android.os.IBinder;
import android.text.InputType;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.SimpleAdapter.ViewBinder;

public class FrmManualCodeActivity extends Activity {
	private GridView mGridView;
	private EditText txtManualinput = null;
	String[] appListString = new String[] { "7", "8", "9", "4", "5", "6", "1",
			"2", "3", "630", "0", "删除" };
	int[] appListID = { 7, 8, 9, 4, 5, 6, 1, 2, 3, -2, 0, -1 };

	private boolean istip = false;

	private final int MaxInputCount = 16;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.frmmanualcodeactivity);
		txtManualinput = (EditText) findViewById(R.id.manual_input_hint_text);
		istip = true;
		InputMethodManager localInputMethodManager = (InputMethodManager) getSystemService("input_method");
		IBinder localIBinder = this.txtManualinput.getWindowToken();
		localInputMethodManager.hideSoftInputFromWindow(localIBinder,
				InputMethodManager.HIDE_IMPLICIT_ONLY);

		mGridView = (GridView) findViewById(R.id.gridview_id);
		ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>();

		int j = appListString.length;
		for (int i = 0; i < j; i++) {
			HashMap<String, Object> map = new HashMap<String, Object>();
			map.put("ItemText", appListString[i].toString());
			map.put("ItemId", appListID[i]);
			lstImageItem.add(map);
		}
		SimpleAdapter saImageItems = new SimpleAdapter(this, lstImageItem,
				R.layout.item_input, new String[] { "ItemText", "ItemId" },
				new int[] { R.id.item_text });
		mGridView.setAdapter(saImageItems);
		mGridView.setOnItemClickListener(new ItemClickListener());
		mGridView.setOnItemLongClickListener(new ItemLongClickListener());
		txtManualinput.setOnTouchListener(new EditTextTouchListener());

	}

	class EditTextTouchListener implements View.OnTouchListener {

		public boolean onTouch(View v, MotionEvent event) {
			int inType = txtManualinput.getInputType();
			txtManualinput.setInputType(InputType.TYPE_NULL);
			txtManualinput.onTouchEvent(event);
			txtManualinput.setInputType(inType);
			return true;
		}
	}

	/**
	 * 按钮的事件
	 */
	class ItemClickListener implements OnItemClickListener {
		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
				long arg3) {
			String string = txtManualinput.getText().toString();// 文字内容
			int j = txtManualinput.getText().toString().length();// 长度
			int i = txtManualinput.getSelectionStart();// 0
			if (arg2 - 11 == 0) {
				if (istip) {
					MessageBox.ShowMakeText(FrmManualCodeActivity.this,
							"长按\"删除\"可以清空内容!");
					istip = false;
				}
				// 按到删除
				if (string.length() > 0 && i - 0 != 0) {
					txtManualinput.getText().delete(i - 1, i);
					txtManualinput.setSelection(i - 1);
				} else {
					txtManualinput.setSelection(0);
				}
			} else {
				if (j < MaxInputCount) {
					// 按到其他
					txtManualinput.getText().insert(i, appListString[arg2]);
					txtManualinput.setSelection(i
							+ appListString[arg2].length());
				} else {
					// 长度超过15个字符
				}
			}
		}
	}

	/**
	 * 长按删除
	 */
	class ItemLongClickListener implements OnItemLongClickListener {

		public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
				int arg2, long arg3) {
			if (arg2 - 11 == 0) {
				if (txtManualinput.getText().length() > 0) {
					txtManualinput.setText("");
				}
			}
			return false;
		}
	}

	@Override
	protected void onResume() {
		istip = true;
		super.onResume();
	}

	@Override
	protected void onPause() {
		super.onPause();
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
	}

}

xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/loginbgcolor"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:background="@color/black" >

        <TextView
            android:id="@+id/textView3"
            style="@style/TopBarTextStyle"
            android:text="@string/manualcode" />

        <Button
            android:id="@+id/mancode_Btnreturn"
            style="@style/TopBtnReturnStyle"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true" />
    </RelativeLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@color/loginbgcolor"
        android:gravity="center"
        android:orientation="horizontal"
        android:paddingTop="8.0dip" >

        <EditText
            android:id="@+id/manual_input_hint_text"
            android:layout_width="210.0dip"
            android:layout_height="43.0dip"
            android:layout_marginLeft="15.0dip"
            android:layout_weight="1.0"
            android:editable="true"
             
            android:hint="@string/manual_input_hint_text"
            android:inputType="number"
            android:lines="1"
            android:maxLength="100" >

            <requestFocus />
        </EditText>

        <ImageView
            android:id="@+id/manual_input_search_btn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5.0dip"
            android:layout_marginRight="10.0dip"
            android:layout_weight="1.0"
            android:src="@drawable/manual_input_bg_selector" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/grid_id"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginBottom="25dip"
        android:background="#00000000"
        android:gravity="bottom|center" >

        <GridView
            android:id="@+id/gridview_id"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@color/loginbgcolor"
            android:fadingEdge="vertical"
            android:gravity="center"
            android:numColumns="3"
            android:stackFromBottom="true"
            android:stretchMode="columnWidth" >
        </GridView>
    </LinearLayout>

</LinearLayout>

gridview的项：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="100.0dip"
    android:layout_height="50.0dip"
    android:background="@drawable/gridview_img_bg"
    android:gravity="center"
    android:paddingBottom="5.0dip" >


    <TextView
        android:id="@+id/item_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:textColor="#ff000000"
        android:textSize="20.0dip" />

</LinearLayout>

上面XML layout的背景图