Android Studio：使用intent PROVIDES仅传递多个值1 VALUE？

我正在尝试进行测验，用户在每个活动中选择答案，最后一页根据所选选项提供答案。 因此，我想将这些值传递给最终活动，但只显示最后选择的值。

第一项活动：

public class Quiz extends Activity { Button btn; RadioGroup rg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.quiz); btn = (Button) findViewById(R.id.nextBtn); rg= (RadioGroup) findViewById(R.id.rg); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (rg.getCheckedRadioButtonId() == -1) { Toast.makeText(getApplicationContext(), "Please select an answer", Toast.LENGTH_SHORT).show(); } else{ Intent intent = new Intent(getApplicationContext(), Quiz1.class); Bundle bundle = new Bundle(); int id = rg.getCheckedRadioButtonId(); RadioButton radioButton = (RadioButton) findViewById(id); bundle.putString("rg", radioButton.getText().toString()); intent.putExtras(bundle); startActivity(intent); } } }); } } 

第二项活动：

 public class Quiz1 extends Activity { Button btn; RadioGroup rg1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.quiz1); btn = (Button) findViewById(R.id.nextBtn1); rg1= (RadioGroup) findViewById(R.id.rg1); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (rg1.getCheckedRadioButtonId() == -1) { Toast.makeText(getApplicationContext(), "Please select an answer", Toast.LENGTH_SHORT).show(); } else{ Intent intent1 = new Intent(getApplicationContext(), Quiz2.class); Bundle bundle1 = new Bundle(); int id = rg1.getCheckedRadioButtonId(); RadioButton radioButton = (RadioButton) findViewById(id); bundle1.putString("rg1", radioButton.getText().toString()); intent1.putExtras(bundle1); startActivity(intent1); } } }); } } 

现在总共有7个活动……不包括最终活动这里是7个（称为Quiz6）活动：

 public class Quiz6 extends Activity { Button btn; RadioGroup rg6; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.quiz6); btn = (Button) findViewById(R.id.nextBtn6); rg6= (RadioGroup) findViewById(R.id.rg6); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (rg6.getCheckedRadioButtonId() == -1) { Toast.makeText(getApplicationContext(), "Please select an answer", Toast.LENGTH_SHORT).show(); } else{ Intent intent6 = new Intent(getApplicationContext(), Final1.class); Bundle bundle6 = new Bundle(); int id = rg6.getCheckedRadioButtonId(); RadioButton radioButton = (RadioButton) findViewById(id); bundle6.putString("rg6", radioButton.getText().toString()); intent6.putExtras(bundle6); startActivity(intent6); } } }); } } 

你明白了:)

这里是结果显示的FINAL活动（称为Final1）

这是代码

 public class Final1 extends Activity { Button btn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.final1); Bundle bundle = getIntent().getExtras(); TextView textView = (TextView)findViewById(R.id.txt); textView.setText(bundle.getCharSequence("rg")); Bundle bundle1 = getIntent().getExtras(); TextView textView1 = (TextView)findViewById(R.id.txt1); textView.setText(bundle1.getCharSequence("rg1")); Bundle bundle2 = getIntent().getExtras(); TextView textView2 = (TextView)findViewById(R.id.txt2); textView.setText(bundle2.getCharSequence("rg2")); Bundle bundle3 = getIntent().getExtras(); TextView textView3 = (TextView)findViewById(R.id.txt3); textView.setText(bundle3.getCharSequence("rg3")); Bundle bundle4 = getIntent().getExtras(); TextView textView4 = (TextView)findViewById(R.id.txt4); textView.setText(bundle4.getCharSequence("rg4")); Bundle bundle5 = getIntent().getExtras(); TextView textView5 = (TextView)findViewById(R.id.txt5); textView.setText(bundle5.getCharSequence("rg5")); Bundle bundle6 = getIntent().getExtras(); TextView textView6 = (TextView)findViewById(R.id.txt6); textView.setText(bundle6.getCharSequence("rg6")); btn = (Button)findViewById(R.id.restartBtn); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent in = new Intent(v.getContext(), Quiz.class); startActivityForResult(in, 0); } }); } } 

一旦我运行程序，最终会发生的事情是，只有“textView”最终会在最终活动之前更改为活动中所选的选项，如上所示

感谢任何帮助，谢谢很多<3

Answer 1

活动的意图只有一个与之关联的Bundle 。 因此，您只将最后一个包传递给最终活动，而其他包则传递给紧接着的活动。 你可以通过这样做解决这个问题

 Bundle bundle = getIntent().getExtras(); //this gets the current activity's extras RadioButton radioButton = (RadioButton) findViewById(id); bundle.putString("rg1", radioButton.getText().toString()); intent.putExtras(bundle); startActivity(intent); 

而不是像现在一样每次都创建一个新的包。 然后将此捆绑包传递给以下活动。 这样，每次获得新答案时，都会将其添加到答案包中，而不是每次只创建一个包含一个项目的新包。

然后在你的最后一个活动中，你只需要获得一个捆绑包，并且可以从中获取所有答案。 注意：您需要确保使用正确的文本更新正确的textview。 在您的问题中， textView是唯一得到更新的视图，6次，其他视图根本没有更新。

 Bundle bundle = getIntent().getExtras(); TextView textView = (TextView)findViewById(R.id.txt); textView.setText(bundle.getCharSequence("rg")); TextView textView1 = (TextView)findViewById(R.id.txt1); textView1.setText(bundle.getCharSequence("rg1")); TextView textView2 = (TextView)findViewById(R.id.txt2); textView2.setText(bundle.getCharSequence("rg2")); TextView textView3 = (TextView)findViewById(R.id.txt3); textView3.setText(bundle.getCharSequence("rg3")); TextView textView4 = (TextView)findViewById(R.id.txt4); textView4.setText(bundle.getCharSequence("rg4")); TextView textView5 = (TextView)findViewById(R.id.txt5); textView5.setText(bundle.getCharSequence("rg5")); TextView textView6 = (TextView)findViewById(R.id.txt6); textView6.setText(bundle.getCharSequence("rg6"));