android的activity的跳转

1.无参数的跳转

先在layout下建立一个factivity.xml，在里面添加2个Button按钮和一个TextView,并添加属性

，

然后建立以个sactivity.xml文件，

在src下建立FActivity,SActivity,   然后在manifest，中分别添加

<activity
android:name="com.example.demo15.FActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.demo15.SActivity"
android:label="@string/app_name" >
</activity>

这里是先启动FActivity。

 

 

分别给factivity,sactivity中的按钮添加实例化并添加监听事件，

bt4.setOnClickListener(new OnClickListener() {

public void onClick(View view) {
// TODO Auto-generated method stub
Intent intent = new Intent(mContext, SActivity.class);
startActivity(intent);

}
});
bt3.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View view) {
// TODO Auto-generated method stub
Intent intent = new Intent(mContext, SActivity.class);
startActivityForResult(intent, 1);

}
});

}

有参数传回的在SActivity

bt1.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View view) {
// TODO Auto-generated method stub
Intent data = new Intent();

data.putExtra("data", content);
setResult(2, data);
// 结束当前页面
finish();
}
});
}

 

然后在FActivity中添加

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 && resultCode == 2) {    //这里要注意的是一个是requestCode 一个是resultCode作判断
String content = data.getStringExtra("data");
tv.setText(content);
}
}

ListView里的跳转

 

protected void onListItemClick(ListView l, View v, int position, long id) {

        Intent intent = null;
        switch (position) {
        case 0:
            intent = new Intent(this, Progress_Activity.class);
            break;
        case 1:
            intent = new Intent(this, OpenLoadingActivity.class);
            break;
        case 2:
            intent = new Intent(this, RocketActivity.class);
            break;
        case 3:
            intent = new Intent(this, FlowerActivity.class);
            break;
        case 4:
            intent = new Intent(this, TrendActivity.class);
            break;
    
        }
        startActivity(intent);

<!-- manifest中对应的-->
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.lqm.animation"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="15"
        android:targetSdkVersion="18" />

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <activity android:name=".Progress_Activity"></activity>
        <activity android:name=".RocketActivity"></activity>
        <activity android:name=".FlowerActivity"></activity>
        <activity android:name=".TrendActivity"></activity>
        <activity android:name=".OpenLoadingActivity"></activity>
    </application>

</manifest>