SoFunction
Updated on 2025-04-04

Android Custom View Soft Keyboard to implement search

1. Add custom to the xml file Search view

<
      android:
      style="@style/StyleEditText" 
      android:hint="Search for Attraction Information"
      />

2. Custom view java file


package ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
public class IconCenterEditText extends EditText implements ,  {
  private static final String TAG = ();
  /**
    * Is it the style on the left of the default icon?
    */
  private boolean isLeft = false;
  /**
    * Whether to click on the soft keyboard to search
    */
  private boolean pressSearch = false;
  /**
    * Soft keyboard search key monitoring
    */
  private OnSearchClickListener listener;
  public void setOnSearchClickListener(OnSearchClickListener listener) {
     = listener;
  }
  public IconCenterEditText(Context context) {
    this(context, null);
    init();
  }
  public IconCenterEditText(Context context, AttributeSet attrs) {
    this(context, attrs, );
    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) { // If it is the default style, draw directly      (canvas);
    } else { // If it is not the default style, you need to draw the icon in the middle      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 = ();
//        float bodyWidth = textWidth + drawableWidth + drawablePadding;
//
//        ((getWidth() - bodyWidth - getPaddingLeft() - getPaddingRight()) / 2, 0);
//      }
//      if (drawableRight != null) {
// float textWidth = getPaint().measureText(getHint().toString()); // Text width// int drawablePadding = getCompoundDrawablePadding(); // Icon spacing// int drawableWidth = (); // Icon Width//        float bodyWidth = textWidth + drawableWidth + drawablePadding;
//        setPadding(getPaddingLeft(), getPaddingTop(), (int)(getWidth() - bodyWidth - getPaddingLeft()), getPaddingBottom());
//        ((getWidth() - bodyWidth - getPaddingLeft()) / 2, 0);
//      }
      (canvas);
    }
  }
  public void translate(Drawable drawable, Canvas canvas) {
    if (drawable != null) {
      float textWidth = getPaint().measureText(getHint().toString());
      int drawablePadding = getCompoundDrawablePadding();
      int drawableWidth = ();
      float bodyWidth = textWidth + drawableWidth + drawablePadding;
      if (drawable == getCompoundDrawables()[0]) {
        ((getWidth() - bodyWidth - getPaddingLeft() - getPaddingRight()) / 2, 0);
      } else {
        setPadding(getPaddingLeft(), getPaddingTop(), (int)(getWidth() - bodyWidth - getPaddingLeft()), getPaddingBottom());
        ((getWidth() - bodyWidth - getPaddingLeft()) / 2, 0);
      }
    }
  }
  @Override
  public void onFocusChange(View v, boolean hasFocus) {
    (TAG, "onFocusChange execute");
    // Restore the default style of EditText    if (!pressSearch && (getText().toString())) {
      isLeft = hasFocus;
    }
  }
  @Override
  public boolean onKey(View v, int keyCode, KeyEvent event) {
    pressSearch = (keyCode == KeyEvent.KEYCODE_ENTER);
    if (pressSearch && listener != null) {
      /*Hidden soft keyboard*/
      InputMethodManager imm = (InputMethodManager) ().getSystemService(Context.INPUT_METHOD_SERVICE);
      if (()) {
        ((), 0);
      }
      (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">search</item>
    </style>

 4. bg_search_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:andro>
  <solid android:color="@android:color/white" />
  <stroke
    android:width="1px"
    android:color="@android:color/darker_gray" />
  <corners android:radius="3dp" />
</shape>

5. Add code to the activity

private IconCenterEditText search_et; 
search_et = (IconCenterEditText) findViewById(.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)) {
          ("Please enter what you want to search for");
        } else {
          //Realize jumps based on your text content Intent intent = new Intent(context,              );
          // ("searchMode", 1);
          ("searchWord", texts);
          (intent);
        }
      }
    });

The above content is the Android custom View soft keyboard implementation that the editor introduced to you. I hope you like it.