Question

我正在创建一个程序，我想在其中使用一个活动作为启动画面，它显示我用作背景图像，复选框和按钮的指令列表。我希望在单击复选框或onChecked然后单击按钮时，启动时不应再次看到该活动。我无法弄清楚如何实现代码。

这就是我正在做的但仍然没有用

CheckBox cb;
SharedPreferences sp;
Button btn;
int result;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    btn = (Button) findViewById(R.id.button1);

    cb = (CheckBox) findViewById(R.id.checkBox1);
    sp = (SharedPreferences) PreferenceManager
            .getDefaultSharedPreferences(this);
    OnCheckedChangeListener cb1 = new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            // TODO Auto-generated method stub
            if(cb.isChecked()){


                SharedPreferences.Editor editor = sp.edit();
                editor.putInt("showActivity", 0);
                editor.commit();
            }
            else{


                result = sp.getInt("showActivity", -1);
                if(result == 0){

                }
            }
        }
    };
    cb.setOnCheckedChangeListener(cb1);
    btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(), "dgdgd", Toast.LENGTH_LONG).show();
            Intent i = new Intent();
            i.setClass(MainActivity.this, SecondActivity.class);
            startActivity(i);

        }
    });
}

Answer 1

如果单击复选框，则单击“确定”按钮时添加此项

    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putInt("showActivity", 0);
    editor.commit();

当您启动应用时，请检查此类..

    int result;
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
    result = sharedPreferences.getInt("showActivity", -1);
    if(result == 0)
      // do not show the activity.. start the next activity

Answer 2

假设您正在查看天气预报XYZActivity。

只需点击按钮

即可

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("showActivity",cb.isChecked());
editor.commit();

下次在开始XYZActivity之前检查。

SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
if(sharedPreferences.getBoolean("showActivity",false)){
   //check box is checked (no need to show activity)
}else{
   //show activity here    
}

如何使用复选框共享首选项

2 个答案: