通过意图传递多个字符串并显示它们

我是开发android应用程序的初学者，我有作业，所以我需要你的帮助。我想将3个字符串从一个活动传递到第二个活动，然后在第二个活动中显示这些字符串。用户必须输入字符串。通过意图传递多个字符串并显示它们

多数民众赞成我的代码我不知道什么是问题。 Main.java

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.widget.EditText; 

public class Main extends Activity { 

public static final String EXTRA_MESSAGE = "com.mobile.activity4.class" ; 
public static final String EXTRA_MESSAGE2 = "com.mobile.activity4.class" ; 
public static final String EXTRA_MESSAGE3 = "com.mobile.activity4.class" ; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
} 

public void sendMessage(View view) 
{ 
    Intent myIntent = new Intent(this,DisplayMessageActivity.class); 


    EditText editText = (EditText) findViewById(R.id.edit_message1); 
    EditText editText2 = (EditText) findViewById(R.id.edit_message2); 
    EditText editText3 = (EditText) findViewById(R.id.edit_message3); 
    Bundle extras = new Bundle(); 

    String message = editText.getText().toString(); 
    String message2 = editText2.getText().toString(); 
    String message3 = editText3.getText().toString(); 

    extras.putString("EXTRA_MESSAGE",message); 
    extras.putString("EXTRA_MESSAGE2",message2); 
    extras.putString("EXTRA_MESSAGE3",message3); 

    myIntent.putExtras(extras); 
    startActivity(myIntent); 



} 

    }

DisplayMessageAcivity.java

import android.app.Activity; 
import android.content.Intent; 
      import android.os.Bundle; 
      import android.view.Menu; 
      import android.widget.TextView; 

     public class DisplayMessageActivity extends Activity { 

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

    Bundle extras = getIntent().getExtras(); 
    String message = extras.getString(Main.EXTRA_MESSAGE); 
    String message2 = extras.getString(Main.EXTRA_MESSAGE2); 
    String message3 = extras.getString(Main.EXTRA_MESSAGE3); 

    TextView textView = new TextView(this); 
    TextView textView2 = new TextView(this); 
    TextView textView3 = new TextView(this); 

    textView.setTextSize(40); 
    textView2.setTextSize(40); 
    textView3.setTextSize(40); 

    textView.setText(message); 
    textView2.setText(message2); 
    textView3.setText(message3); 

    setContentView(textView); 
    setContentView(textView2); 
    setContentView(textView3); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.display_message, menu); 
    return true; 
} 

     }

请帮我感谢

来源

2013-03-22 Mohammad

什么问题你facin g在这里？

在DisplayMessageActivity

，你必须保持所有的TextView里面的布置和设置，如下图所示的setContentView布局，

 TextView textView = new TextView(this); 
     TextView textView2 = new TextView(this); 
    TextView textView3 = new TextView(this); 
    LinearLayout linear=new LinearLayout(this); 
    linear.addView(textView); 
    linear.addView(textView2); 
    linear.addView(textView3); 

    setContentView(linear);

你可以这样做在XML还

把所有的文本视图在xml布局中并将setcontentview中的布局设置为

 setContentView(R.layout.acitivyt_layout);

如果您有任何疑问，请告知我。

来源

2013-03-23 05:06:03 deepa

通过意图传递多个字符串并显示它们

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