效果图:
MainActivity:
import android.content.Intent; import android.net.Uri; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.startAnotherActivity).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //启动另一个Activity startActivity(new Intent(MainActivity.this, AnotherActivity.class)); } }); findViewById(R.id.startUri).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //打开一个网址 startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://m.baidu.com/"))); } }); } }
activity_main:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> <Button android:id="@+id/startAnotherActivity" android:text="启动另一个Activity" android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/startUri" android:text="打开一个网址" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>
activity_main:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".AnotherActivity"> <TextView android:text="这是另一个Activity" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RelativeLayout>