EditText密码框，查看隐藏

重写点击事件监听down up事件，down的时候显示明文，up的时候显示密文

 view.setOnTouchListener(new View.OnTouchListener() {
                    @Override
                    public boolean onTouch(View view, MotionEvent motionEvent) {
                        switch (motionEvent.getAction()){
                            case 0:{
                                medit_password.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
                            }break;
                            case 1:{
                                medit_password.setTransformationMethod(PasswordTransformationMethod.getInstance());
                            }break;
                        }
                        return false;
                    }
                });

我还弄了个小眼睛的图片down的时候闭眼，up的时候睁眼

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@mipmap/eye_close" android:state_pressed="true" />
    <item android:drawable="@mipmap/eye_open"  />
</selector>