效果图：
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需要自定义view,具体实现如下：
import android.widget.EditText;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import com.example.administrator.mahu.R;
public class SearchView extends EditText {
private float searchSize = 0;
private float textSize = 0;
private int textColor = 0xFF000000;
private Drawable mDrawable;
private Paint paint;
public SearchView(Context context, AttributeSet attrs) {
super(context, attrs);
InitResource(context, attrs);
InitPaint();
}
private void InitResource(Context context, AttributeSet attrs) {
TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.searchedit);
float density = context.getResources().getDisplayMetrics().density;
searchSize = mTypedArray.getDimension(R.styleable.searchedit_imagewidth, 18 * density + 0.5F);
textColor = mTypedArray.getColor(R.styleable.searchedit_textColor, 0xFF848484);
textSize = mTypedArray.getDimension(R.styleable.searchedit_textSize, 14 * density + 0.5F);
mTypedArray.recycle();
}
private void InitPaint() {
paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(textColor);
paint.setTextSize(textSize);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
DrawSearchIcon(canvas);
}
private void DrawSearchIcon(Canvas canvas) {
if (this.getText().toString().length() == 0) {
float textWidth = paint.measureText("搜索");
float textHeight = getFontLeading(paint);
float dx = (getWidth() - searchSize - textWidth - 8) / 2;
float dy = (getHeight() - searchSize) / 2;
canvas.save();
canvas.translate(getScrollX() + dx, getScrollY() + dy);
if (mDrawable != null) {
mDrawable.draw(canvas);
}
canvas.drawText("搜索", getScrollX() + searchSize + 8, getScrollY() + (getHeight() - (getHeight() - textHeight) / 2) - paint.getFontMetrics().bottom - dy, paint);
canvas.restore();
}
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (mDrawable == null) {
try {
mDrawable = getContext().getResources().getDrawable(R.mipmap.search);
mDrawable.setBounds(0, 0, (int) searchSize, (int) searchSize);
} catch (Exception e) {
}
}
}
@Override
protected void onDetachedFromWindow() {
if (mDrawable != null) {
mDrawable.setCallback(null);
mDrawable = null;
}
super.onDetachedFromWindow();
}
public float getFontLeading(Paint paint) {
Paint.FontMetrics fm = paint.getFontMetrics();
return fm.bottom - fm.top;
}
}
在values---attrs下添加
搜索图片
在布局文件中调用如下
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持创新互联。
