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  • Android--Activity在跳转时携带数据

    首先看看两种传递方法演示样例:(一个简单姻缘计算器)

    主Activity

    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Intent;
    import android.view.Menu;
    import android.view.View;
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
        }
    
    
        public void click(View v){
        	Intent intent = new Intent(this, SecondActivity.class);
        	//把数据封装至intent对象中
    //    	intent.putExtra("malename", "张三");
    //    	intent.putExtra("femalename", "芙蓉姐姐");
        	
        	//把数据封装至bundle对象中
        	Bundle bundle = new Bundle();
        	bundle.putString("malename", "<span style="font-family: Arial, Helvetica, sans-serif;">张三</span>"<span style="font-family: Arial, Helvetica, sans-serif;">);</span>
        	bundle.putString("femalename", "芙蓉姐姐");
        	
        	//把bundle对象封装至intent对象中
        	intent.putExtras(bundle);
        	startActivity(intent);
        }
        
    }
    import java.util.Random;
    
    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.widget.TextView;
    
    public class SecondActivity extends Activity {
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		// TODO Auto-generated method stub
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_second);
    		
    		Intent intent = getIntent();
    		//从intent对象中把封装好的数据取出来
    //		String maleName = intent.getStringExtra("malename");
    //		String feMaleName = intent.getStringExtra("femalename");
    		
    		Bundle bundle = intent.getExtras();
    		String maleName = bundle.getString("malename");
    		String feMaleName = bundle.getString("femalename");
    		
    		Random rd = new Random();
    		int yinyuan = rd.nextInt(100);
    		
    		TextView tv = (TextView) findViewById(R.id.tv);
    		tv.setText(maleName + "和" + feMaleName + "的姻缘值为" + yinyuan);
    	}
    }

    activity_main.xml:

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".MainActivity" 
        android:orientation="vertical"
        >
    
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="这是姻缘计算器。非常准的哟" />
    
        <EditText 
            android:id="@+id/et_malename"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="张三"
            />
        <EditText 
            android:id="@+id/et_femalename"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="芙蓉姐姐"
            />
        <Button 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="计算"
            android:onClick="click"
            />
    </LinearLayout>

    activity_second.xml:

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".MainActivity" >
    
        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="这是第二个Activity" />
    
    </RelativeLayout>



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  • 原文地址:https://www.cnblogs.com/yjbjingcha/p/7298697.html
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