青岛姨妈疼Java部分

原创已于 2022-12-03 00:31:47 修改 · 85 阅读

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#android #android studio #ide

于 2022-12-03 00:25:51 首次发布

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.TextView;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EditText et = (EditText) findViewById(R.id.et_username);
        et.addTextChangedListener(new TextWatcher() {
            @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) {
                TextView tv1 = (TextView) findViewById(R.id.tv_1);
                TextView tv2 = (TextView) findViewById(R.id.tv_2);
                tv1.setText(et.getText());
                tv2.setText(et.getText());
            }
        });
    }
}