intent-filter示例：
<activity android:name=".CustomActivity" android:label="@string/title_activity_custom" > <intent-filter> <action android:name="android.intent.action.VIEW"></action> <action android:name="com.example.shad_fnst.intentfilterdemo.LAUNCH"></action> <category android:name="android.intent.category.DEFAULT"></category> <data android:scheme="http"></data> </intent-filter> </activity>
CustomActivity可以过滤接收到action是android.intent.action.VIEW或com.example.shad_fnst.intentfilterdemo.LAUNCH，以及data是http的Intent，并作出响应。系统中的其他APP也可以过滤接收到MainActivity中的Intent，并作出响应，例如浏览器。
1 package com.example.shad_fnst.intentfilterdemo;
2
3 import android.app.Activity;
4 import android.content.Intent;
5 import android.net.Uri;
6 import android.os.Bundle;
7 import android.view.Menu;
8 import android.view.MenuItem;
9 import android.view.View;
10 import android.widget.Button;
11
12
13 public class MainActivity extends Activity {
14
15 @Override
16 protected void onCreate(Bundle savedInstanceState) {
17 super.onCreate(savedInstanceState);
18 setContentView(R.layout.activity_main);
19
20 Button startBrowser_a = (Button) findViewById(R.id.start_browser_a);
21 startBrowser_a.setOnClickListener(new View.OnClickListener() {
22 @Override
23 public void onClick(View v) {
24 Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
25 Uri.parse("http://www.baidu.com"));
26 startActivity(intent);
27 }
28 });
29
30 Button startBrowser_b = (Button) findViewById(R.id.start_browser_b);
31 startBrowser_b.setOnClickListener(new View.OnClickListener() {
32 @Override
33 public void onClick(View v) {
34 Intent intent = new Intent("com.example.shad_fnst.intentfilterdemo.LAUNCH",
35 Uri.parse("http://www.baidu.com"));
36 startActivity(intent);
37 }
38 });
39
40 Button startBrowser_c = (Button) findViewById(R.id.start_browser_c);
41 startBrowser_c.setOnClickListener(new View.OnClickListener() {
42 @Override
43 public void onClick(View v) {
44 Intent intent = new Intent("com.example.shad_fnst.intentfilterdemo.LAUNCH",
45 Uri.parse("https://www.baidu.com"));
46 startActivity(intent);
47 }
48 });
49 }
50
51 @Override
52 public boolean onCreateOptionsMenu(Menu menu) {
53 // Inflate the menu; this adds items to the action bar if it is present.
54 getMenuInflater().inflate(R.menu.menu_main, menu);
55 return true;
56 }
57
58 @Override
59 public boolean onOptionsItemSelected(MenuItem item) {
60 // Handle action bar item clicks here. The action bar will
61 // automatically handle clicks on the Home/Up button, so long
62 // as you specify a parent activity in AndroidManifest.xml.
63 int id = item.getItemId();
64
65 //noinspection SimplifiableIfStatement
66 if (id == R.id.action_settings) {
67 return true;
68 }
69
70 return super.onOptionsItemSelected(item);
71 }
72 }
MainActivity.java
1 package com.example.shad_fnst.intentfilterdemo;
2
3 import android.app.Activity;
4 import android.net.Uri;
5 import android.os.Bundle;
6 import android.widget.TextView;
7
8
9 public class CustomActivity extends Activity {
10
11 @Override
12 protected void onCreate(Bundle savedInstanceState) {
13 super.onCreate(savedInstanceState);
14 setContentView(R.layout.activity_custom);
15
16 TextView label = (TextView) findViewById(R.id.show_data);
17 Uri uri = getIntent().getData();
18 label.setText(uri.toString());
19 }
20 }
CustomActivity.java
1 <?xml version="1.0" encoding="utf-8"?> 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 3 package="com.example.shad_fnst.intentfilterdemo" > 4 5 <application 6 android:allowBackup="true" 7 android:icon="@mipmap/ic_launcher" 8 android:label="@string/app_name" 9 android:theme="@style/AppTheme" > 10 <activity 11 android:name=".MainActivity" 12 android:label="@string/app_name" > 13 <intent-filter> 14 <action android:name="android.intent.action.MAIN" /> 15 16 <category android:name="android.intent.category.LAUNCHER" /> 17 </intent-filter> 18 </activity> 19 <activity 20 android:name=".CustomActivity" 21 android:label="@string/title_activity_custom" > 22 <intent-filter> 23 <action android:name="android.intent.action.VIEW"></action> 24 <action android:name="com.example.shad_fnst.intentfilterdemo.LAUNCH"></action> 25 <category android:name="android.intent.category.DEFAULT"></category> 26 <data android:scheme="http"></data> 27 </intent-filter> 28 </activity> 29 </application> 30 31 </manifest>
AndroidManifest.xml
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" 3 android:layout_height="fill_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 4 android:paddingRight="@dimen/activity_horizontal_margin" 5 android:paddingTop="@dimen/activity_vertical_margin" 6 android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity" 7 android:orientation="vertical"> 8 9 <Button 10 android:layout_width="fill_parent" 11 android:layout_height="wrap_content" 12 android:id="@+id/start_browser_a" 13 android:text="@string/start_browser_a"/> 14 15 <Button 16 android:layout_width="fill_parent" 17 android:layout_height="wrap_content" 18 android:id="@+id/start_browser_b" 19 android:text="@string/start_browser_b"/> 20 21 <Button 22 android:layout_width="fill_parent" 23 android:layout_height="wrap_content" 24 android:id="@+id/start_browser_c" 25 android:text="@string/start_browser_c"/> 26 27 </LinearLayout>
activity_main.xml
1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 3 android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 4 android:paddingRight="@dimen/activity_horizontal_margin" 5 android:paddingTop="@dimen/activity_vertical_margin" 6 android:paddingBottom="@dimen/activity_vertical_margin" 7 tools:context="com.example.shad_fnst.intentfilterdemo.CustomActivity"> 8 9 <TextView 10 android:layout_width="fill_parent" 11 android:layout_height="400dp" 12 android:id="@+id/show_data"/> 13 14 </RelativeLayout>
activity_custom.xml
1 <resources> 2 <string name="app_name">IntentFilterDemo</string> 3 4 <string name="hello_world">Hello world!</string> 5 <string name="action_settings">Settings</string> 6 <string name="start_browser_a">Start Browser with VIEW action</string> 7 <string name="start_browser_b">Start Browser with LAUNCH action</string> 8 <string name="start_browser_c">Exception Condition</string> 9 <string name="title_activity_custom">CustomActivity</string> 10 </resources>
strings.xml
时间： 2024-10-26 18:44:37