如何使用意图分享图库图片到应用程序

Question

我已经将我的应用程序添加到图库顶部的共享图标，但到目前为止它只打开我的应用程序，但是我如何将图片URI和东西发送到我的应用程序?我明白我必须使用意图?有什么导游可以让我看看吗?谷歌网站上的简易分享指南在这里帮不上什么忙。

Answer 1

试试:

<activity
    android:name="yourActivity"
    android:icon="@drawable/ic_launcher"
    android:label="test">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
   <intent-filter>
        <action android:name="android.intent.action.SEND" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="image/*" />
    </intent-filter>
    <intent-filter>
        <action android:name="android.intent.action.SEND" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="text/plain" />
    </intent-filter>
    <intent-filter>
        <action android:name="android.intent.action.SEND_MULTIPLE" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="image/*" />
    </intent-filter>
</activity>

处理传入内容

void onCreate (Bundle savedInstanceState) {
...
// Get intent, action and MIME type
Intent intent = getIntent();
String action = intent.getAction();
String type = intent.getType();
if (Intent.ACTION_SEND.equals(action) && type != null) {
    if ("text/plain".equals(type)) {
        handleSendText(intent); // Handle text being sent
    } else if (type.startsWith("image/")) {
        handleSendImage(intent); // Handle single image being sent
    }
} else if (Intent.ACTION_SEND_MULTIPLE.equals(action) && type != null) {
    if (type.startsWith("image/")) {
        handleSendMultipleImages(intent); // Handle multiple images being sent
    }
} else {
    // Handle other intents, such as being started from the home screen
}
...
}
void handleSendText(Intent intent) {
String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
if (sharedText != null) {
    // Update UI to reflect text being shared
}
}
void handleSendImage(Intent intent) {
Uri imageUri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
if (imageUri != null) {
    // Update UI to reflect image being shared
}
}
 void handleSendMultipleImages(Intent intent) {
ArrayList<Uri> imageUris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
if (imageUris != null) {
    // Update UI to reflect multiple images being shared
 }
}

有关更多信息，请参见从其他应用程序接收简单数据和向其他应用程序发送简单数据

Answer 2

要在Activity中处理图像，你需要检查intent是否有该图像

Intent intent = getIntent();
Bundle extras = intent.getExtras();
String action = intent.getAction();
if (Intent.ACTION_SEND.equals(action)) {   
    if (extras.containsKey(Intent.EXTRA_STREAM)) {
        // Get resource path of the stream, which in this case will be the image
    }
}

此外，你需要在你的manifest中添加你想要过滤这些共享图像的意图。

<activity android:name=".Theme"
       android:label="YourImageActivity">
  <intent-filter>
    <action android:name="android.intent.action.SEND" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:mimeType="image/*" />
  </intent-filter>
</activity>