Day5带补间动画的登录界面

image.png

image.png

1.导入素材

image.png

2.配值xml文件

1.Activity_main.xml

2.edit_view_shape.xml

3.input_bg_shape.xml

4.login_bin_selector.xml

5.translate.xml

6.translate1.xml

7.addview.style.xml

8.styles.xml

3.MainActivity

public class MainActivity extends AppCompatActivity implements TextWatcher {

    private EditText user;
    private EditText password;
    private Button loginBtn;
    private ImageView leftarm;
    private ImageView rightarm;
    private ImageView leftHand;
    private ImageView rightHand;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }
public  void initView(){
        user=findViewById(R.id.et_user);
        password=findViewById(R.id.et_password);
        loginBtn=findViewById(R.id.bt_login);
        leftarm=findViewById(R.id.iv_left_arm);
        rightarm=findViewById(R.id.iv_right_arm);
        leftHand=findViewById(R.id.iv_left_hand);
         rightHand=findViewById(R.id.iv_right_hand);
        //监听内容改变 控制按钮是否可以点击
        user.addTextChangedListener(this);
        password.addTextChangedListener(this);
        //监听EditText的焦点变化->控制是否需要捂住眼睛
    password.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View view, boolean hasfocus) {
            if (hasfocus==true){
                //捂住眼睛
              close();
            }else{
                //打开
               open();
            }
        }
    });




}
    /**
     *当有控件获得焦点focus 自动弹出键盘
     * 1.点击软键盘的enter 自动收回键盘
     * 2.代码控制 InputMethodMannager
     *
     */
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if(event.getAction()==MotionEvent.ACTION_DOWN) {
            //隐藏键盘
            //1.获取系统输入的管理器
            InputMethodManager inputMethodManager=(InputMethodManager)getSystemService(INPUT_METHOD_SERVICE);
            //2.隐藏键盘
            inputMethodManager.hideSoftInputFromWindow(user.getWindowToken(),0);
            //3.取消焦点
            View focusView=getCurrentFocus();
            if(focusView!=null){
                focusView.clearFocus();
            }

         //  focusView.requestFocus();//请求焦点
        }

        return true;
    }

    @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void afterTextChanged(Editable editable) {
//判断两个输入框是否有内容
        if(user.getText().toString().length()>0&&password.getText().toString().length()>0){
            //按钮可以点击
            loginBtn.setEnabled(true);
        }else{
            //按钮不能点击
            loginBtn.setEnabled(false);
        }
    }
    public void  close(){
        //旋转翅膀左边
        RotateAnimation lrotateAnimation=new RotateAnimation(0,170,leftarm.getWidth(),0f);
        lrotateAnimation.setDuration(400);
        lrotateAnimation.setFillAfter(true);
//右边
        RotateAnimation rrotateAnimation=new RotateAnimation(0,-170,0f,0f);
        rrotateAnimation.setDuration(400);
        rrotateAnimation.setFillAfter(true);
        leftarm.startAnimation(lrotateAnimation);
        rightarm.startAnimation(rrotateAnimation);

        TranslateAnimation down = (TranslateAnimation) AnimationUtils.loadAnimation(this,R.anim.translate);
        leftHand.startAnimation(down);
        rightHand.startAnimation(down);
    }
    public  void open(){
        //旋转翅膀左边
        RotateAnimation lrotateAnimation=new RotateAnimation(170,0,leftarm.getWidth(),0f);
        lrotateAnimation.setDuration(400);
        lrotateAnimation.setFillAfter(true);
//右边
        RotateAnimation rrotateAnimation=new RotateAnimation(-170,0,0f,0f);
        rrotateAnimation.setDuration(400);
        rrotateAnimation.setFillAfter(true);
        leftarm.startAnimation(lrotateAnimation);
        rightarm.startAnimation(rrotateAnimation);

        TranslateAnimation up = (TranslateAnimation) AnimationUtils.loadAnimation(this,R.anim.translate1);
        leftHand.startAnimation(up);
        rightHand.startAnimation(up);
    }
}

4.心得体会

很有趣的一个demo，学多了不少关于补间动画的知识，很有意义