Android EditText不会重新出现在同一个地方

时间:2016-06-29 12:07:23

标签: java android xml android-animation

我正在使用Android上的信用卡/借记卡表单。

我想要实现的目标:

我有一个名为EditText的{​​{1}}字段,用户应输入他/她的卡号。在收到卡号的所有数字后,另外两个CardNumber字段EditText& ExpiryDate滑出去了。如果用户删除CVV字段中的任何数字,请CardNumber& ExpiryDate字段应消失或滑入&删除写在他们身上的文字。

当用户再次输入CVV时输入所需的所有数字,CardNumber和& ExpiryDate应该再次出现在之前出现的同一个地方

但这就是我得到的

enter image description here

他们没有出现在同一个地方。我如何实现这一目标?如何从CVV&中删除文本ExpiryDate他们失踪后。{/ p>

这是我到目前为止所做的工作

MainActivity.java

CVV

content_main.xml

import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;

import java.security.Key;

public class MainActivity extends AppCompatActivity {

    private EditText cardNumber, expiryDate, CVV, nameOnCard;

    private boolean flag = false;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);//Locks the screen orientation
        init(); //Initializes the variables

        typefunc();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void init()
    {
        cardNumber = (EditText) findViewById(R.id.cardNumber); //Field for storing the card number
        expiryDate = (EditText) findViewById(R.id.expiryDate); //For storing the Expiry Date
        CVV = (EditText) findViewById(R.id.CVV); //For storing the CVV
        nameOnCard = (EditText) findViewById(R.id.nameOnCard); //For storing the name of the Cardholder
    }

    public void typefunc()
    {

        //FORMATTING CARD NUMBER FIELD
        cardNumber.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(s.length()==19)
                {
                    //MAKING EXPIRY DATE VISIBLE & PUTTING FOCUS ON IT
                    expiryDate.setVisibility(View.VISIBLE);
                    expiryDate.requestFocus();

                    //SLIDE OUT ANIMATION (FADE IN --> FADE OUT)
                    expiryDate.setAlpha(0.0f);//(INVISIBLE)
                    expiryDate.animate().translationY(expiryDate.getHeight()).alpha(1.0f);//(VISIBLE)



                    //MAKING CVV VISIBLE
                    CVV.setVisibility(View.VISIBLE);

                    //SLIDE OUT ANIMATION (FADE IN --> FADE OUT)
                    CVV.setAlpha(0.0f); //(INVISIBLE)
                    CVV.animate().translationY(CVV.getHeight()).alpha(1.0f); //(VISIBLE)


                }
                if(s.length()<19)
                {
                    //DISAPPEARING THE EXPIRY DATE 7 CVV
                    expiryDate.setVisibility(View.GONE);
                    CVV.setVisibility(View.GONE);

                    //CLEARING THE FOCUS
                    expiryDate.clearFocus();

                    //SLIDE IN ANIMATION (FADE OUT --> FADE IN)
                    expiryDate.animate().translationY(0).alpha(0.0f);
                    CVV.animate().translationY(0).alpha(0.0f);




                }

            }

            @Override
            public void afterTextChanged(Editable s)
            {
                char space = ' ';

                if(s.length()>0 && (s.length()%5) == 0)
                {
                    char  c = s.charAt(s.length()-1);
                    if(Character.isDigit(c))
                    {
                        s.insert(s.length()-1,String.valueOf(space));
                    }
                }
            }
        });

        //FORMATTING THE EXPIRY DATE FIELD
        expiryDate.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(s.length()==5)
                    CVV.requestFocus();
            }

            @Override
            public void afterTextChanged(Editable s)
            {
                char slash = '/';
                if(s.length()>0 && (s.length()%3) == 0)
                {
                    char c = s.charAt(s.length()-1);
                    if(Character.isDigit(c))
                        s.insert(s.length()-1,String.valueOf(slash));
                }
            }
        });

        CVV.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(s.length()==3) {
                    nameOnCard.setVisibility(View.VISIBLE);


                }
            }

            @Override
            public void afterTextChanged(Editable s)
            {
                if(s.length()==3)
                    nameOnCard.requestFocus();
            }
        });
    }

}

我错过了什么?

感谢您的时间!!

3 个答案:

答案 0 :(得分:1)

你可能不想翻译EditText,因为这就是为什么它放在屏幕上比想要的低。

如果你想要使用翻译动画,你必须使用View.INVISIBLE而不是View.GONE,否则初始的getHeight()将返回0.你还需要为s.length()==翻译为0 19和-expiryDate.getHeight()用于s.length()&lt; 19

if(s.length()==19)
{
     //MAKING EXPIRY DATE VISIBLE & PUTTING FOCUS ON IT
     expiryDate.setVisibility(View.VISIBLE);
     expiryDate.requestFocus();

     //SLIDE OUT ANIMATION (FADE IN --> FADE OUT)
     expiryDate.setAlpha(0.0f);//(INVISIBLE)
     expiryDate.animate().translationY(0).alpha(1.0f);//(VISIBLE)



     //MAKING CVV VISIBLE
     CVV.setVisibility(View.VISIBLE);

     //SLIDE OUT ANIMATION (FADE IN --> FADE OUT)
     CVV.setAlpha(0.0f); //(INVISIBLE)
     CVV.animate().translationY(0).alpha(1.0f); //(VISIBLE)
}
else if(s.length()<19 && expiryDate.getVisibility() == View.VISIBLE)
{
    //DISAPPEARING THE EXPIRY DATE 7 CVV
    expiryDate.setVisibility(View.INVISIBLE);
    CVV.setVisibility(View.INVISIBLE);

    //CLEARING THE FOCUS
    expiryDate.clearFocus();

    //SLIDE IN ANIMATION (FADE OUT --> FADE IN)
    expiryDate.animate().translationY(-expiryDate.getHeight()).alpha(0.0f);
    CVV.animate().translationY(-CVV.getHeight()).alpha(0.0f);
}

此外,您还希望在init方法中翻译视图,如此

expiryDate.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
    @Override
    public boolean onPreDraw() {
        expiryDate.animate().translationY(-expiryDate.getHeight());
        expiryDate.getViewTreeObserver().removeOnPreDrawListener(this);
        return true;
    }
});

答案 1 :(得分:0)

尝试使用View.INVISIBLE代替View.GONE

  

View.GONE此视图不可见,并且不需要任何空间用于布局。

     

View.INVISIBLE此视图不可见,但仍占用空间   布局目的。

同时将视图XML从android:visibility="gone"更新为android:visibility="invisible",看看它是否有效。

答案 2 :(得分:0)

你从Editext.getHeight()获得高度。未绘制视图时,它返回零。所以第二次得到一些xx值。所以只有第二次你的幻灯片动画才会发生。

如果滑动动画不是您的首选项,请对视图组使用animatelayoutchanges = true。它将为一些标准动画制作动画。那会更好。

或者你可以从onPredrawListener获得高度。

由于