如何只传递用户选择的字符串

Question

当我单击一个按钮时，我需要该按钮仅传递选定的字符串。如果 Integer 为 2，我会尝试传递一个特定的字符串。显示这是我的第一个名为 PlayerChoose 的活动：  //PI1 and PI2 is Strings from another Activity.    PI1 = getIntent().getStringExtra("Player1Text");    PI2 = getIntent().getStringExtra("Player2Text");    //These bellow are buttons.    Player1Btn = findViewById(R.id.PlayerToD1);    Player2Btn = findViewById(R.id.PlayerToD2);    //These Integers is to set 0 so the app is not broken.    PlayerInt1 = 0;    PlayerInt2 = 0;    //Here im setting text to the buttons so you know what player you pick    Player1Btn.setText(PI1);    Player2Btn.setText(PI2);    //These button adds 1 to the Integer PlayerInt1 so if you hit it     //twice it executes what is in the if statement.    Player1Btn.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View view) {            PlayerInt1++;            if (PlayerInt1 == 2) {    Intent TruthOrDare1 = new Intent(PlayerChoose.this,TruthOrDare.class);                TruthOrDare1.putExtras(getIntent());                TruthOrDare1.putExtra("Player1Text", PI1);                startActivity(TruthOrDare1);            }        }    });    //Same button as Player1Btn Does the same things.    Player2Btn.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View view) {            PlayerInt2++;            if (PlayerInt2 == 2) {    Intent TruthOrDare2 = new Intent(PlayerChoose.this,TruthOrDare.class);                TruthOrDare2.putExtras(getIntent());                TruthOrDare2.putExtra("Player2Text", PI2);                startActivity(TruthOrDare2);            }        }    });    } }我的问题是，只有当我在 PlayerChoose Activity 中点击 Player1Btn 和 PI2 如果我点击 Player2Btn 时，它才会传递两个字符串 PI1，PI2 而不是 PI1。如果我点击 Player1Btn 和 PI2 如果我点击 PI2，我怎么能只传递 PI1。

Answer 1

看来你有不必要的字符串

TruthOrDare1.putExtras(getIntent());
TruthOrDare2.putExtras(getIntent());

在点击侦听器中，它同时添加了 PI1 和 PI2

Answer 2

因此，在名为 PlayerChoose 的第一个活动中很简单，您可以创建另一个字符串，无论我将其命名为 PIP1 的示例，这就是您必须做的：

  //So Put PI1 as default string of PIP1.

  PIP1 = PI1;

  //Then in the Buttons OnClickListeners 

  Player1Btn.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View view) {

            PlayerInt1++;

            //If you click this button it will set PIP1 to the string you want to 

            //pass in this case PI1

            PIP1 = PI1;

            if (PlayerInt1 == 2) {

          Intent TruthOrDare1 = new Intent(PlayerChoose.this, TruthOrDare.class);

                TruthOrDare1.putExtras(getIntent());

                //Intead of putting the text itself you put PIP1 thats changing 

                //depens on what button you click

                TruthOrDare1.putExtra("PlayerText", PIP1);

                startActivity(TruthOrDare1);

            }

        }

    });

    Player2Btn.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View view) {

            PlayerInt2++;

            //And here you Change the same string PIP1 to PI2

            //Here you change the PIP1 to PI2 so PIP1 change to PI2 and not PI1

            PIP1 = PI2;

            if (PlayerInt2 == 2) {

           Intent TruthOrDare2 = new Intent(PlayerChoose.this, TruthOrDare.class);

                TruthOrDare2.putExtras(getIntent());

                TruthOrDare2.putExtra("PlayerText", PIP1);

                startActivity(TruthOrDare2);

            }

        }

    });

在名为 TruthOrDare 的第二个活动中，您可以更改此内容：

    //So you only have 1 String Instead of 2 with 1 key 

    PI1 = getIntent().getStringExtra("PlayerText");

    //One TextView

    PlayerTurnName1 = findViewById(R.id.PlayerTurnText1);

    PlayerTurnName1.setText(PI1); 

这个概念是每次你按下按钮时 PIP1 都会改变，所以它不会传递所有的值。