EditText文字输入飞入效果

Posted 2022-06-21 冰糖葫芦三剑客

这个效果还是不错的，下面我们来直接进入主题吧：

下面的效果图不是我最终的效果，但是我的效果是有多重颜色随机变得，没有那么单一，喜欢可以直接试试

1.创建一个类  BiuEditText

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.text.Editable;
import android.text.Layout;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.animation.DecelerateInterpolator;
import android.widget.EditText;
import android.widget.TextView;

import java.util.Random;

import com.huihai.home2school.android.depends.main.R;
import com.huihai.home2school.android.depends.main.ZhuceActivity;

/**
 * 输入框的飞入动画效果 
 * Created by james on 22/11/15.
 */
public class BiuEditText extends EditText 
    private ViewGroup contentContainer;
    private int height;
    private String cacheStr = "";
    private int textCount=0;

    public BiuEditText(Context context, AttributeSet attrs) 
        super(context, attrs);
        init();
        setlistener();
    

    private void setlistener() 
        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) 

                if (cacheStr.length() < s.length()) 
                    char last = s.charAt(s.length() - 1);
                	textCount++;
                    update(last, true);
                 else 
                    char last = cacheStr.charAt(cacheStr.length() - 1);
                    textCount++;
                    update(last, false);
                
                cacheStr = s.toString();
            

            @Override
            public void afterTextChanged(Editable s) 

            
        );
    

    private void update(char last, boolean isUp) 
        final TextView textView = new TextView(getContext());
//        Random random=new Random();//随机数
        if(textCount%3==0)//设置不同的颜色
			textView.setTextColor(getResources().getColor(R.color.gold));
		  if(textCount%3==1)
			textView.setTextColor(getResources().getColor(R.color.brown));
		 if(textCount%3==2)
			textView.setTextColor(getResources().getColor(R.color.red));
		else
			textView.setTextColor(getResources().getColor(R.color.blue));
		
//        textView.setTextColor(getResources().getColor(android.R.color.holo_blue_light));//设置输入字体的颜色
        textView.setTextSize(30);
        textView.setText(String.valueOf(last));
        textView.setGravity(Gravity.CENTER);
        contentContainer.addView(textView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
        textView.measure(0, 0);


        int pos = getSelectionStart();
        Layout layout = getLayout();
        int line = layout.getLineForOffset(pos);
        int baseline = layout.getLineBaseline(line);
        int ascent = layout.getLineAscent(line);

        float startX = 0;
        float startY = 0;
        float endX = 0;
        float endY = 0;
        if (isUp) 
            startX = layout.getPrimaryHorizontal(pos) + 100;
            startY = height / 3 * 2;
            endX = startX;
            endY = baseline + ascent;
         else 
            endX = new Random().nextInt(contentContainer.getWidth());
            endY = height / 3 * 2;
            startX = layout.getPrimaryHorizontal(pos) + 70;
            startY = baseline + ascent;
        


        final AnimatorSet animSet = new AnimatorSet();
        ObjectAnimator animX = ObjectAnimator.ofFloat(textView, "translationX", startX, endX);
        ObjectAnimator animY = ObjectAnimator.ofFloat(textView, "translationY", startY, endY);
        ObjectAnimator scaleX = ObjectAnimator.ofFloat(textView, "scaleX", 0.6f, 1.2f);
        ObjectAnimator scaleY = ObjectAnimator.ofFloat(textView, "scaleY", 0.6f, 1.2f);

        animY.setInterpolator(new DecelerateInterpolator());
        animSet.setDuration(600);
        animSet.addListener(new AnimatorListenerAdapter() 
            @Override
            public void onAnimationStart(Animator animation) 
            

            @Override
            public void onAnimationEnd(Animator animation) 
                contentContainer.removeView(textView);
            
        );
        animSet.playTogether(animX, animY, scaleX, scaleY);
        animSet.start();
    


    private void init() 
        contentContainer = (ViewGroup) ((ZhuceActivity) getContext()).findViewById(android.R.id.content);
        WindowManager windowManager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
        height = windowManager.getDefaultDisplay().getHeight();
    

2.布局  activity_main.xml

 <com.huihai.home2school.android.depends.commons.BiuEditText
            android:id="@+id/login_et_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            
            android:background="@drawable/linearlayout_white_beijing"
            android:textColor="@color/me_letter_cllor" />

                 ***********************************************简单大方****************************************************