Android核心技術-day02-08-settings
阿新 • • 發佈:2018-11-07
package com.gaozewen.setting; import android.content.SharedPreferences; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private CheckBox cb; private SharedPreferences sp; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); cb = findViewById(R.id.cb); sp = getSharedPreferences("config", MODE_PRIVATE); // 回顯資料 boolean status = sp.getBoolean("status", false); cb.setChecked(status); cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) { // Toast.makeText(MainActivity.this,"setOnCheckedChangeListener",Toast.LENGTH_SHORT).show(); if(isChecked){ // 去設定 EditText 的內容 } SharedPreferences.Editor edit = sp.edit(); edit.putBoolean("status",isChecked); edit.apply(); // 應用資料 類似關閉流 事務 } }); cb.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Toast.makeText(MainActivity.this,"setOnClickListener",Toast.LENGTH_SHORT).show(); // 這裡需要呼叫方法,上面直接呼叫的引數 cb.isChecked(); } }); } }