android意图传参数（四）

标签：android   intent   

一、按照向导创建一个工程,layout的activity_main.xml文件内容如下:

<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" >

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="意向传参数测试"
      />

</RelativeLayout>

2)android:layout_height="wrap_content" :设置为wrap_content将完整显示其内部的文本和图像。布局元素将根据内容更改大小。设置一个视图的尺寸为wrap_content大体等同于设置Windows控件的Autosize属性为True。

3)android:text :设置按钮的显示值

二、在Main函数做意向传参跳转

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		button = (Button)this.findViewById(R.id.button);
		button.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
			   <span style="color:#ff0000;">  Intent intent = new Intent(MainActivity.this,OtherActivity.class);
			     intent.putExtra("name", "Deng");
			     intent.putExtra("age", 23);
			     startActivity(intent);</span>
			}
		});
	}

通过startActivity方法启动

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
<TextView
     android:id="@+id/msg" 
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
    />    

</LinearLayout>

public class OtherActivity extends Activity {

	private TextView textview;
	public OtherActivity(){
		
	}
	protected void onCreate(Bundle savedInstanceState){
		super.onCreate(savedInstanceState);
		setContentView(R.layout.other);
		textview = (TextView)this.findViewById(R.id.msg);
		<span style="color:#ff0000;">Intent intent = getIntent();</span>
		<span style="color:#ff0000;">String name = intent.getStringExtra("name");
		int age = intent.getIntExtra("age", 0);</span>
		textview.setText("name"+name+";"+"age"+age);
	}
}

记得重写onCreate方法以及设置setContentView布局

 <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.android_intent.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    <span style="color:#ff0000;">   <activity
           android:name = ".OtherActivity" 
           /></span>
    </application>

android意图传参数（四）

标签：android   intent   

原文地址：http://blog.csdn.net/loveheronly/article/details/44223437