如何检查是否用户已经点击了一个按钮？ [英] How to check if a user has already clicked a Button?

问题描述

我需要检查，如果用户已经点击了一个按钮...我有我的菜单，包括促销code里面......我需要检查，如果用户已经点击它，这样我可以告诉他（的一个按钮下一次他点击吧）你已经兑现了此促销$​​ C $ C！我该怎么办呢？我只需要一块code在那里我可以检查按钮点击。

PS：alredy搜索整个网络这个

感谢您！

编辑：我下面code。希望它会帮助别人...

  @覆盖
公共布尔onOptionsItemSelected（菜单项项）{
    布尔点击= FALSE;
    开关（item.getItemId（））{
        案例R.id.get code：
            共享preferences preF = getShared preferences（促销，MODE_PRIVATE）;
            布尔激活= pref.getBoolean（激活，FALSE）;
            如果（激活== FALSE）{按钮BTN =（按钮）findViewById（R.id.get code）;
            AlertDialog.Builder dlgAlert =新AlertDialog.Builder（本）;
            dlgAlert.setMessage（的getString（R.string.congrats）+\\ n+的getString（R.string.promcd）+\\ n+ \"ASC2013-\"+Build.ID+\"-\"+android.os.Build.SERIAL.charAt(3)+\"-\"+Build.SERIAL.charAt(6)+\"-\"+Build.SERIAL.charAt(9)+\"-\"+Build.SERIAL.charAt(12));
            dlgAlert.setPositiveButton（R.string.go，
                    新DialogInterface.OnClickListener（）{
                        公共无效的onClick（DialogInterface对话，诠释它）{
                            意图emailIntent =新意图（android.content.Intent.ACTION_SEND）;
                            emailIntent.putExtra（android.content.Intent.EXTRA_EMAIL，新的String [] {[e-mail]}）;
                            emailIntent.putExtra（android.content.Intent.EXTRA_SUBJECT，的getString（R.string.validreq）+ Build.BOOTLOADER）;
                            emailIntent.putExtra（android.content.Intent.EXTRA_TEXT，的getString（R.string.why）+\\ n+的getString（R.string.validreq1）+\\ n+的getString（R.string.dialogMSG1）;                            emailIntent.setType（纯/文）;                            startActivity（emailIntent）;                        }
                    }）;
            dlgAlert.setCancelable（真）;
            dlgAlert.create（）显示（）。
                共享preferences.Editor编辑器= pref.edit（）;
                editor.putBoolean（激活，真正的）;
                editor.commit（）;
            }
      打破;
    }
      开关（item.getItemId（））{
      案例R.id.settings：
          意图设置=新意图（MainActivity.this，Settings.class）;
            MainActivity.this.startActivity（设置）;
    }
    返回true;
}
 

解决方案

您可以在用户单击该按钮保存在共享preferences的标志。接下来的时间，你可以在共​​享preferences检查是否存在该标志。

  button.setOnClickListener（新View.OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{
    共享preferences preF = getShared preferences（促销，MODE_PRIVATE）;
    布尔激活= pref.getBoolean（激活，FALSE）;
    如果（激活== FALSE）{//用户未活化促销code  - ＆GT;激活
        共享preferences.Editor编辑器= pref.edit（）;
        editor.putBoolean（激活，真正的）;
        editor.commit（）;
    }
}
 

I need to check if a user has already clicked a button… I have a button in my menu with a "promo code" inside… I need to check if user already clicked it so i can tell him (the next time he clicks it) "You already redeemed this promo code!" How do i do that? I need only the piece of code where i can check for button clicked.

PS: alredy searched the whole web for this!

Thank you!

EDIT: my code below. Hope it’ll help others…

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    boolean clicked = false;
    switch (item.getItemId()) {
        case R.id.getcode: 
            SharedPreferences pref = getSharedPreferences("promo", MODE_PRIVATE);
            boolean activated = pref.getBoolean("activated", false);
            if(activated == false) {  Button btn = (Button) findViewById(R.id.getcode);
            AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(this);
            dlgAlert.setMessage(getString(R.string.congrats) + "\n" + getString(R.string.promcd) + "\n" + "ASC2013-"+Build.ID+"-"+android.os.Build.SERIAL.charAt(3)+"-"+Build.SERIAL.charAt(6)+"-"+Build.SERIAL.charAt(9)+"-"+Build.SERIAL.charAt(12));
            dlgAlert.setPositiveButton(R.string.go,
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
                            emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] {"[e-mail]"});
                            emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, getString(R.string.validreq)+Build.BOOTLOADER);
                            emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, getString(R.string.why) + "\n" + getString(R.string.validreq1) +"\n"+getString(R.string.dialogMSG1);

                            emailIntent.setType("plain/text");  

                            startActivity(emailIntent);

                        }
                    });
            dlgAlert.setCancelable(true);
            dlgAlert.create().show(); 
                SharedPreferences.Editor editor = pref.edit();
                editor.putBoolean("activated", true);
                editor.commit();
            } 
      break;
    }
      switch (item.getItemId()) {
      case R.id.settings: 
          Intent settings = new Intent(MainActivity.this, Settings.class);
            MainActivity.this.startActivity(settings);


    }
    return true;
}

解决方案

You can save a flag in shared preferences if the user clicks the button. Next time, you can check in the shared preferences if there exists the flag.

button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
    SharedPreferences pref = getSharedPreferences("promo", MODE_PRIVATE);
    boolean activated = pref.getBoolean("activated", false);
    if(activated == false) {  // User hasn't actived the promocode -> activate it 
        SharedPreferences.Editor editor = pref.edit();
        editor.putBoolean("activated", true);
        editor.commit();
    } 
}

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