每日日报2021.3.17

今天完成内容：

1.学习android

package com.example.test;

 

import android.app.Activity;

import android.app.ActionBar;

import android.app.Fragment;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;

import android.os.Build;

 

public class MainActivity extends Activity implements OnClickListener {

  Handler handler = new Handler();

 

  @Override

  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

 

    findViewById(R.id.btnSimpleToast).setOnClickListener(this);

    findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(

        this);

    findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(this);

    findViewById(R.id.btnCustomToast).setOnClickListener(this);

    findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(this);

 

  }

 

  public void showToast() {

    handler.post(new Runnable() {

 

      @Override

      public void run() {

        Toast.makeText(getApplicationContext(), "我来自其他线程！",

            Toast.LENGTH_SHORT).show();

 

      }

    });

  }

 

  @Override

  public void onClick(View v) {

    Toast toast = null;

    switch (v.getId()) {

    case R.id.btnSimpleToast:

      Toast.makeText(getApplicationContext(), "默认Toast样式",

          Toast.LENGTH_SHORT).show();

      break;

    case R.id.btnSimpleToastWithCustomPosition:

      toast = Toast.makeText(getApplicationContext(), "自定义位置Toast",

          Toast.LENGTH_LONG);

      toast.setGravity(Gravity.CENTER, 0, 0);

      toast.show();

      break;

    case R.id.btnSimpleToastWithImage:

      toast = Toast.makeText(getApplicationContext(), "带图片的Toast",

          Toast.LENGTH_LONG);

      toast.setGravity(Gravity.CENTER, 0, 0);

      LinearLayout toastView = (LinearLayout) toast.getView();

      ImageView imageCodeProject = new ImageView(getApplicationContext());

      imageCodeProject.setImageResource(R.drawable.ic_launcher);

      toastView.addView(imageCodeProject, 0);

      toast.show();

      break;

    case R.id.btnCustomToast:

      LayoutInflater inflater = getLayoutInflater();

      View layout = inflater.inflate(R.layout.custom,

          (ViewGroup) findViewById(R.id.llToast));

      ImageView image = (ImageView) layout

          .findViewById(R.id.tvImageToast);

      image.setImageResource(R.drawable.ic_launcher);

      TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);

      title.setText("Attention");

      TextView text = (TextView) layout.findViewById(R.id.tvTextToast);

      text.setText("完全自定义Toast");

      toast = new Toast(getApplicationContext());

      toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);

      toast.setDuration(Toast.LENGTH_LONG);

      toast.setView(layout);

      toast.show();

      break;

    case R.id.btnRunToastFromOtherThread:

      new Thread(new Runnable() {

        public void run() {

          showToast();

        }

      }).start();

      break;

 

    }

 

  }

 

}

2.看视频

遇到问题：

无

明日目标：

学习Android studio的开发