5.25

今日總結

學習時間1h

package com.app.chapter03;

import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;

import com.app.chapter03.utils.DateUtil;

/** @noinspection unused*/
public class ButtonClickActivity extends AppCompatActivity implements View.OnClickListener {

    private TextView tv_result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_button_click);
        Button btn_click_single = findViewById(R.id.btn_click_single);
        tv_result = findViewById(R.id.tv_result);
         btn_click_single.setOnClickListener(new MyOnClickListener(tv_result));

         Button btn_click_public = findViewById(R.id.btn_click_public);
         btn_click_public.setOnClickListener(this);


    }

    /**
     * Called when a view has been clicked.
     *
     * @param v The view that was clicked.
     */
    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.btn_click_public){
            String desc =String.format("%s  您點選了按鈕： %s",DateUtil.getNowTime(), ((Button)v).getText());
            tv_result.setText(desc);

        }
    }

    static class MyOnClickListener  implements View.OnClickListener{

        private final TextView tv_result;

        public MyOnClickListener(TextView tv_result) {
            this.tv_result = tv_result ;
        }

        /**
         * Called when a view has been clicked.
         *
         * @param v The view that was clicked.
         */
        @Override
        public void onClick(View v) {
            String desc =String.format("%s  您點選了按鈕： %s",DateUtil.getNowTime(), ((Button)v).getText());
            tv_result.setText(desc);
    }
}