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[操作系统]自定义View 实现软键盘实现搜索


1.


<com.etoury.etoury.ui.view.IconCenterEditText      android:id="@+id/search_et"      style="@style/StyleEditText"       android:hint="搜索景点信息"      />

 

2. 自定义的   view java文件

IconCenterEditText.java

package com.etoury.etoury.ui.view;import android.content.Context;import android.graphics.Canvas;import android.graphics.drawable.Drawable;import android.text.TextUtils;import android.util.AttributeSet;import android.util.Log;import android.view.KeyEvent;import android.view.View;import android.view.inputmethod.InputMethodManager;import android.widget.EditText;public class IconCenterEditText extends EditText implements View.OnFocusChangeListener, View.OnKeyListener {  private static final String TAG = IconCenterEditText.class.getSimpleName();  /**   * 是否是默认图标再左边的样式   */  private boolean isLeft = false;  /**   * 是否点击软键盘搜索   */  private boolean pressSearch = false;  /**   * 软键盘搜索键监听   */  private OnSearchClickListener listener;  public void setOnSearchClickListener(OnSearchClickListener listener) {    this.listener = listener;  }  public IconCenterEditText(Context context) {    this(context, null);    init();  }  public IconCenterEditText(Context context, AttributeSet attrs) {    this(context, attrs, android.R.attr.editTextStyle);    init();  }  public IconCenterEditText(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    init();  }  private void init() {    setOnFocusChangeListener(this);    setOnKeyListener(this);  }  @Override  protected void onDraw(Canvas canvas) {    if (isLeft) { // 如果是默认样式,则直接绘制      super.onDraw(canvas);    } else { // 如果不是默认样式,需要将图标绘制在中间      Drawable[] drawables = getCompoundDrawables();      Drawable drawableLeft = drawables[0];      Drawable drawableRight = drawables[2];      translate(drawableLeft, canvas);      translate(drawableRight, canvas);//      if (drawableLeft != null) {//        float textWidth = getPaint().measureText(getHint().toString());//        int drawablePadding = getCompoundDrawablePadding();//        int drawableWidth = drawableLeft.getIntrinsicWidth();//        float bodyWidth = textWidth + drawableWidth + drawablePadding;////        canvas.translate((getWidth() - bodyWidth - getPaddingLeft() - getPaddingRight()) / 2, 0);//      }//      if (drawableRight != null) {//        float textWidth = getPaint().measureText(getHint().toString()); // 文字宽度//        int drawablePadding = getCompoundDrawablePadding(); // 图标间距//        int drawableWidth = drawableRight.getIntrinsicWidth(); // 图标宽度//        float bodyWidth = textWidth + drawableWidth + drawablePadding;//        setPadding(getPaddingLeft(), getPaddingTop(), (int)(getWidth() - bodyWidth - getPaddingLeft()), getPaddingBottom());//        canvas.translate((getWidth() - bodyWidth - getPaddingLeft()) / 2, 0);//      }      super.onDraw(canvas);    }  }  public void translate(Drawable drawable, Canvas canvas) {    if (drawable != null) {      float textWidth = getPaint().measureText(getHint().toString());      int drawablePadding = getCompoundDrawablePadding();      int drawableWidth = drawable.getIntrinsicWidth();      float bodyWidth = textWidth + drawableWidth + drawablePadding;      if (drawable == getCompoundDrawables()[0]) {        canvas.translate((getWidth() - bodyWidth - getPaddingLeft() - getPaddingRight()) / 2, 0);      } else {        setPadding(getPaddingLeft(), getPaddingTop(), (int)(getWidth() - bodyWidth - getPaddingLeft()), getPaddingBottom());        canvas.translate((getWidth() - bodyWidth - getPaddingLeft()) / 2, 0);      }    }  }  @Override  public void onFocusChange(View v, boolean hasFocus) {    Log.d(TAG, "onFocusChange execute");    // 恢复EditText默认的样式    if (!pressSearch && TextUtils.isEmpty(getText().toString())) {      isLeft = hasFocus;    }  }  @Override  public boolean onKey(View v, int keyCode, KeyEvent event) {    pressSearch = (keyCode == KeyEvent.KEYCODE_ENTER);    if (pressSearch && listener != null) {      /*隐藏软键盘*/      InputMethodManager imm = (InputMethodManager) v.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);      if (imm.isActive()) {        imm.hideSoftInputFromWindow(v.getApplicationWindowToken(), 0);      }      listener.onSearchClick(v);    }    return false;  }  public interface OnSearchClickListener {    void onSearchClick(View view);  }}

3. style

</style>        <style name="StyleEditText">      <item name="android:layout_width">match_parent</item>      <item name="android:layout_height">wrap_content</item>      <item name="android:background">@drawable/bg_search_bar</item>      <item name="android:drawablePadding">5dp</item>      <item name="android:gravity">center_vertical</item>      <item name="android:imeOptions">actionSearch</item>      <item name="android:drawableLeft">@drawable/icon_search</item>      <item name="android:padding">5dp</item>      <item name="android:singleLine">true</item>      <item name="android:textColorHint">@color/grey</item>      <item name="android:textSize">16sp</item>      <item name="android:hint">搜索</item>    </style>

4. bg_search_bar.

<??><shape ="http://schemas.android.com/apk/res/android">  <solid android:color="@android:color/white" />  <stroke    android:width="1px"    android:color="@android:color/darker_gray" />  <corners android:radius="3dp" /></shape>

5. activity 中加上代码

private IconCenterEditText search_et;

search_et = (IconCenterEditText) findViewById(R.id.search_et);

search_et.setOnSearchClickListener(new OnSearchClickListener() {      @Override      public void onSearchClick(View view) {        // TODO Auto-generated method stub        String texts = search_et.getText().toString().trim();        if ("".equals(texts)) {          ToastUtil.showToast("请输入您要搜索的内容");        } else {          //根据你的文字内容实现跳转
          Intent intent = new Intent(context,              SearchWordActivity.class);          // intent.putExtra("searchMode", 1);          intent.putExtra("searchWord", texts);          context.startActivity(intent);        }      }    });