EditText文字输入飞入效果

来源：互联网发布：天津工业大学网络教学编辑：程序博客网时间：2024/05/29 04:11

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" />

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