Android软键盘与EditText近乎完美的交互

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fastandrutlis开发框架

android使用EditText的时候总是遇到一些很不爽的问题：

无图无真相。。
1.点击屏幕其他的任何位置，软键盘不会隐藏
2.软键盘会把输入框遮盖掉

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3.软键盘会把界面顶起

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由于对键盘和EditText的种种不爽，就弄了一个以下东西

aa.gif

一.首先要知道怎么用代码控制软键盘的显示隐藏

以下是软键盘显示隐藏类 KeyBoardUtils.java

import android.app.Activity;import android.content.Context;import android.view.View;import android.view.inputmethod.InputMethodManager;import android.widget.EditText;import static android.content.Context.INPUT_METHOD_SERVICE;/** * @author laijian * @version 2017/8/29 * @Copyright (C)下午2:55 , Suntektech */public class KeyBoardUtils {    /**     * 打开软键盘     *     * @param mEditText     * @param mContext     */    public static void openKeybord(EditText mEditText, Context mContext) {        InputMethodManager imm = (InputMethodManager) mContext                .getSystemService(INPUT_METHOD_SERVICE);        imm.showSoftInput(mEditText, InputMethodManager.RESULT_SHOWN);        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,                InputMethodManager.HIDE_IMPLICIT_ONLY);    }    /**     * 关闭软键盘     *     * @param mEditText     * @param mContext     */    public static void closeKeybord(EditText mEditText, Context mContext) {        InputMethodManager imm = (InputMethodManager) mContext.getSystemService(INPUT_METHOD_SERVICE);        imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);    }    /**     * des:隐藏软键盘,这种方式参数为activity     *     * @param activity     */    public static void hideInputForce(Activity activity) {        if (activity == null || activity.getCurrentFocus() == null)            return;        ((InputMethodManager) activity.getSystemService(INPUT_METHOD_SERVICE))                .hideSoftInputFromWindow(activity.getCurrentFocus()                        .getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);    }    /**     * 打开键盘     **/    public static void showInput(Context context, View view) {        InputMethodManager imm = (InputMethodManager) context.getSystemService(INPUT_METHOD_SERVICE);        if (imm != null) {            view.requestFocus();            imm.showSoftInput(view, 0);        }    }}

这个类没什么好说的

二.要知道软键盘弹出时的高度

获取软键盘弹出的高度是为了创建一个自适应的dialog，键盘弹出时就会在键盘上方显示一个带EditText的dialog
以下是获取软键盘高度的类 KeyBoardHeightUtils.java

import android.app.Activity;import android.graphics.Rect;import android.os.Build;import android.view.View;import android.view.ViewTreeObserver;import android.widget.FrameLayout;/** * @author laijian * @version 2017/8/31 * @Copyright (C)上午11:11 , Suntektech */public class KeyBoardHeightUtils {    private View mChildOfContent;//activity 的布局View    private int usableHeightPrevious;//activity的View的可视高度    private KeyBoardHigthListener keyBoardHigthListener;    public static KeyBoardHeightUtils setKeyBoardHeigthListener(Activity activity, KeyBoardHigthListener keyBoardHigthListener) {        return new KeyBoardHeightUtils(activity, keyBoardHigthListener);    }    public void removeKeyboardHeightListener() {        if (mChildOfContent == null) {            return;        }        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {            mChildOfContent.getViewTreeObserver().removeGlobalOnLayoutListener(globalLayoutListener);        } else {            mChildOfContent.getViewTreeObserver().removeOnGlobalLayoutListener(globalLayoutListener);        }    }    private KeyBoardHeightUtils(final Activity activity, KeyBoardHigthListener keyBoardHigthListener) {        this.keyBoardHigthListener = keyBoardHigthListener;//获取安卓activity的最顶级控件        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);//        mChildOfContent = content.getChildAt(0); //监听视图高度变化      mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(globalLayoutListener);//点击父控件隐藏软键盘        mChildOfContent.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                KeyBoardUtils.hideInputForce(activity);            }        });    }    private ViewTreeObserver.OnGlobalLayoutListener globalLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {        @Override        public void onGlobalLayout() {            possiblyResizeChildOfContent();        }    };    private void possiblyResizeChildOfContent() {        int usableHeightNow = computeUsableHeight();        if (usableHeightNow != usableHeightPrevious) {            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();            int heightDifference = usableHeightSansKeyboard - usableHeightNow;//为了去除无谓的干扰，限制下高度            if (heightDifference > (usableHeightSansKeyboard / 4)) {                keyBoardHigthListener.keyBoardHigthListener(usableHeightSansKeyboard - heightDifference, true, mChildOfContent);            } else {                keyBoardHigthListener.keyBoardHigthListener(usableHeightSansKeyboard, false, mChildOfContent);            }            usableHeightPrevious = usableHeightNow;        }    }//获取控件在屏幕的可视高度，就是界面除去了标题栏、除去了被软键盘挡住的部分，所剩下的矩形区域    private int computeUsableHeight() {        Rect r = new Rect();        mChildOfContent.getWindowVisibleDisplayFrame(r);        return (r.bottom - r.top);    }    interface KeyBoardHigthListener {//这个回调类写的不好，请自行修改        void keyBoardHigthListener(int heigth, boolean showKeyBoard, View contentView);    }}

这代码也不多也不难理解

三.要知道EditText控件是否被遮盖

判断EditText控件是否被遮盖是为了弹出一个带EditText 的 dialog 这样就不会说EditText被覆盖后不知道输入了些什么内容

以下是检测EditText控件是否被覆盖

 private boolean checkViewVisiable() {        Rect localRect = new Rect();        boolean visiable = edtextVew.getLocalVisibleRect(localRect);        System.out.println("visiable=" + visiable);        return visiable;    }

以下是判断获取的焦点是不是EditText

  View childView = contentView.findFocus();                if (childView != null) {                    if (childView instanceof EditText) {                        edtextVew = (EditText) childView;

以下类就是关键类，判断EditText是否被覆盖，弹dialog等
KeyBoardUI.java

import android.app.Activity;import android.app.Dialog;import android.content.Context;import android.graphics.Rect;import android.text.Editable;import android.text.TextUtils;import android.text.TextWatcher;import android.util.DisplayMetrics;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.EditText;import android.widget.RelativeLayout;import android.widget.TextView;import com.univercityapp.convergelibrary.widget.NullMenuEditText;/** * @author laijian * @version 2017/8/31 * @Copyright (C)上午11:57 , Suntektech */public class KeyBoardUI implements KeyBoardHeightUtils.KeyBoardHigthListener {    private EditText edtextVew;//activity的输入框    private Activity activity;    private Dialog mDialog;    private NullMenuEditText popuEdtext;//popu的输入框    private int screenWeight = 0;//屏幕宽度    private KeyBoardHeightUtils keyBoardHeightUtils;    public static KeyBoardUI buildKeyBoardUI(Activity activity) {        return new KeyBoardUI(activity);    }    private KeyBoardUI(Activity activity) {        this.activity = activity;        getScreen();        initDialog();        keyBoardHeightUtils = KeyBoardHeightUtils.setKeyBoardHeigthListener(activity, this);    }    private void getScreen() {        DisplayMetrics dm = new DisplayMetrics();        activity.getWindowManager().getDefaultDisplay().getMetrics(dm);        screenWeight = dm.widthPixels;    }    private void initDialog() {        LayoutInflater inflater = (LayoutInflater) activity.getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);        View popuView = inflater.inflate(ResourcesUtils.getLayoutResources(activity, "popuwindow"), null);        RelativeLayout populay = (RelativeLayout) popuView.findViewById(ResourcesUtils.getIdResources(activity, "popu_lay"));        popuEdtext = (NullMenuEditText) popuView.findViewById(ResourcesUtils.getIdResources(activity, "ed_text"));        mDialog = new Dialog(activity, ResourcesUtils.getStyleResources(activity, "dialog"));        mDialog.setContentView(popuView);        populay.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                KeyBoardUtils.closeKeybord(popuEdtext, activity);                mDialog.dismiss();            }        });    }    @Override    public void keyBoardHigthListener(int heigth, boolean showKeyBoard, View contentView) {        if (showKeyBoard) {            if (contentView != null) {                View childView = contentView.findFocus();                if (childView != null) {                    if (childView instanceof EditText) {                        edtextVew = (EditText) childView;                        if (!checkViewVisiable()) {                            mDialog.show();//重新调整dialog的高度                            Window dialogWindow = mDialog.getWindow();                            WindowManager.LayoutParams p = dialogWindow.getAttributes(); // 获取对话框当前的参数值                            p.height = heigth;                             p.width = screenWeight;                             dialogWindow.setAttributes(p);                            dialogWindow.setWindowAnimations(ResourcesUtils.getStyleResources(activity, "PopupAnimation"));                            onEdChange();                            KeyBoardUtils.openKeybord(edtextVew, activity);                        } else {                            if (mDialog != null) {                                mDialog.dismiss();                            }                        }                    }                }            }        } else {            if (mDialog != null) {                mDialog.dismiss();            }        }    }    private boolean checkViewVisiable() {        Rect localRect = new Rect();        boolean visiable = edtextVew.getLocalVisibleRect(localRect);        System.out.println("visiable=" + visiable);        return visiable;    }    private void onEdChange() {        String hintStr = "";        String text = "";        if (!TextUtils.isEmpty(edtextVew.getText())) {            text = edtextVew.getText().toString();        }        if (!TextUtils.isEmpty(edtextVew.getHint())) {            hintStr = edtextVew.getHint().toString();        }        popuEdtext.findFocus();        popuEdtext.setInputType(edtextVew.getInputType());        popuEdtext.setHint(hintStr);        popuEdtext.setText(text);        popuEdtext.setSelection(text.length());        popuEdtext.setMaxEms(edtextVew.getMaxEms());        popuEdtext.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) {                edtextVew.setText(s);                edtextVew.setSelection(s.length());            }            @Override            public void afterTextChanged(Editable s) {            }        });        popuEdtext.setOnEditorActionListener(new TextView.OnEditorActionListener() {            @Override            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {                if (actionId == 0) {                    KeyBoardUtils.closeKeybord(popuEdtext, activity);                    mDialog.dismiss();                    return true;                }                return false;            }        });    }    public void removeKeyboardHeightListener() {        keyBoardHeightUtils.removeKeyboardHeightListener();    }}

四.禁止EditText长按出复制粘贴

NullMenuEditText.java

/** * @author laijian * @version 2017/8/30 * @Copyright (C)下午5:26 , Suntektech */import android.content.Context;import android.util.AttributeSet;import android.view.ActionMode;import android.view.Menu;import android.view.MenuItem;import android.widget.EditText;/** * Created by jianjun.lin on 16/4/12. */public class NullMenuEditText extends EditText {    boolean canPaste() {        return false;    }    boolean canCut() {        return false;    }    boolean canCopy() {        return false;    }    boolean canSelectAllText() {        return false;    }    boolean canSelectText() {        return false;    }    boolean textCanBeSelected() {        return false;    }    public NullMenuEditText(Context context, AttributeSet attrs) {        super(context, attrs);        setLongClickable(false);        setTextIsSelectable(false);        setCustomSelectionActionModeCallback(new ActionMode.Callback() {            @Override            public boolean onCreateActionMode(ActionMode mode, Menu menu) {                return false;            }            @Override            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {                return false;            }            @Override            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {                return false;            }            @Override            public void onDestroyActionMode(ActionMode mode) {            }        });    }    @Override    public boolean onTextContextMenuItem(int id) {        return true;    }}

五.相关xml资源

还有一些动画效果资源
popup_enter.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate        android:duration="100"        android:fromYDelta="1"        android:toYDelta="0" />    <alpha        android:duration="100"        android:fromAlpha="0.0"        android:toAlpha="1.0" /></set>

popup_exit.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate        android:duration="100"        android:fromYDelta="0"        android:toYDelta="1" />    <alpha        android:duration="100"        android:fromAlpha="1.0"        android:toAlpha="0.0" /></set>

styles资源

 <style name="PopupAnimation" mce_bogus="1" parent="android:Animation">        <item name="android:windowEnterAnimation">@anim/popup_enter</item>        <item name="android:windowExitAnimation">@anim/popup_exit</item>    </style>    <style name="dialog" parent="android:style/Theme.Dialog">        <item name="android:background">#00000000</item>        <item name="android:windowBackground">@android:color/transparent</item>        <item name="android:windowNoTitle">true</item>        <item name="android:windowIsFloating">true</item>        <item name="android:backgroundDimEnabled">false</item>    </style>

layout文件
popuwindow.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/popu_lay"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:background="#00000000">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:background="#ffffff"        android:orientation="vertical"        android:paddingTop="2dp">        <com.univercityapp.convergelibrary.widget.NullMenuEditText            android:id="@+id/ed_text"            android:layout_width="match_parent"            android:layout_height="36dp"            android:paddingLeft="6dp"            android:background="#ffffff"            android:gravity="center_vertical"            android:inputType="text"            android:maxLines="1"            android:scrollHorizontally="true"            android:textSize="16sp" />    </LinearLayout></RelativeLayout>

六.获取R的资源utils

ResourcesUtils.java

import android.content.Context;import android.content.res.Resources;import java.lang.reflect.Field;/** * Created by laijian code on 2016-10-19. */public class ResourcesUtils {    public static int getIdResources(Context context, String idName) {        Resources res = context.getResources();        return res.getIdentifier(idName, "id", context.getPackageName());    }    public static int getDrawableResources(Context context, String drawableName) {        Resources res = context.getResources();        return res.getIdentifier(drawableName, "drawable", context.getPackageName());    }    public static int getColorResources(Context context, String colorName) {        Resources res = context.getResources();        return res.getIdentifier(colorName, "color", context.getPackageName());    }    public static int getStringResources(Context context, String stringName) {        Resources res = context.getResources();        return res.getIdentifier(stringName, "string", context.getPackageName());    }    public static int getLayoutResources(Context context, String LayoutName) {        Resources res = context.getResources();        return res.getIdentifier(LayoutName, "layout", context.getPackageName());    }    public static int getAttrResources(Context context, String attrName) {        Resources res = context.getResources();        return res.getIdentifier(attrName, "attr", context.getPackageName());    }    public static int getStyleResources(Context context, String attrName) {        Resources res = context.getResources();        return res.getIdentifier(attrName, "style", context.getPackageName());    }    /**     * context.getResources().getIdentifier 无法获取到 styleable 的数据     *     * @param name     * @return     * @paramcontext     */    public static int getStyleable(Context context, String name) {        return ((Integer) getResourceId(context, name, "styleable")).intValue();    }    /**     * 获取 styleable 的 ID 号数组     *     * @param name     * @return     * @paramcontext     */    public static int[] getStyleableArray(Context context, String name) {        return (int[]) getResourceId(context, name, "styleable");    }    /**     * 对于 context.getResources().getIdentifier 无法获取的数据 , 或者数组     * <p/>     * 资源反射值     *     * @param name     * @param type     * @return     * @paramcontext     */    private static Object getResourceId(Context context, String name, String type) {        String className = context.getPackageName() + ".R";        try {            Class<?> cls = Class.forName(className);            for (Class<?> childClass : cls.getClasses()) {                String simple = childClass.getSimpleName();                if (simple.equals(type)) {                    for (Field field : childClass.getFields()) {                        String fieldName = field.getName();                        if (fieldName.equals(name)) {                            System.out.println(fieldName);                            return field.get(null);                        }                    }                }            }        } catch (Exception e) {            e.printStackTrace();        }        return null;    }}

七.如何使用

使用非常简单，在需要的activity的oncreat方法添加

        KeyBoardUI.buildKeyBoardUI(this);

在AndroidManifest.xml用到上面方法的activity添加

android:windowSoftInputMode="adjustResize"

谢谢观看完以上内容
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