android - 在 EditText 字段中移动光标？安卓

Question

我有三个相邻的 EditText 字段，每个字段都填充 6 个用户选择的字符。我想要的是，一旦用户在第一个 EditText 字段中键入第 6 个字符，光标就会自动转移到第二个 EditText 字段。第二个->第三个相同。我该怎么做呢？

Answer 1

像这样使用

edittext1.setOnKeyListener(new OnKeyListener() {
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        if(edittext1.getText().toString().length()==6) {
            edittext2.requestFocus();
        }
        return false;
    }
});

Answer 2

只需KeyListener 对您的第一个实施 a EditText（比方说editTextOne）。
在按下每个键时，检查 的长度editTextOne是否等于 6，然后通过调用requestFocus()第二个editText（即editTextTwo.requestFocus()）上的方法将光标移动到第二个。

Answer 3

尝试这个。

mEtText.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            // TODO Auto-generated method stub
            if(mEtText.getText().length() == 6){
                secondEditText.requestFocus();
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }
    });

Answer 4

在这种情况下，有必要使用适当的侦听器：TextWatcher

与下面的代码交互：

package com.example.stackoverflow;

import android.os.Bundle;
import android.app.Activity;
import android.text.Editable;
import android.text.InputFilter;
import android.text.TextWatcher;
import android.view.Menu;
import android.widget.EditText;
import android.widget.Toast;

public class SimpleActivity10 extends Activity {

    private final short MAXCHAR = 6;

    private EditText editText1, editText2, editText3;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.simple_activity10);
        editText1 = (EditText) this.findViewById(R.id.editText1);
        editText2 = (EditText) this.findViewById(R.id.editText2);
        editText3 = (EditText) this.findViewById(R.id.editText3);

        editText1.addTextChangedListener(textWatcher1);
        editText2.addTextChangedListener(textWatcher2);

        InputFilter[] FilterArray = new InputFilter[1];
        FilterArray[0] = new InputFilter.LengthFilter(MAXCHAR);
        editText1.setFilters(FilterArray);
        editText2.setFilters(FilterArray);
        editText3.setFilters(FilterArray);

    }

    private TextWatcher textWatcher1 = new TextWatcher() {

        @Override
        public void afterTextChanged(Editable editable) {
            int messageLength = editable.toString().length();
            if (messageLength == MAXCHAR) {
                Toast.makeText(getApplicationContext(), "EditText 2 get focus!", Toast.LENGTH_SHORT).show();
                editText2.requestFocus();
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

    };

    private TextWatcher textWatcher2 = new TextWatcher() {

        @Override
        public void afterTextChanged(Editable editable) {
            int messageLength = editable.toString().length();
            if (messageLength == MAXCHAR) {
                Toast.makeText(getApplicationContext(), "EditText 3 get focus!", Toast.LENGTH_SHORT).show();
                editText3.requestFocus();
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

    };

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.simple_activity10, menu);
        return true;
    }

}

和布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".SimpleActivity10" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/editText2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:ems="10" />

    <EditText
        android:id="@+id/editText3"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:ems="10" />

</LinearLayout>