从一个应用程序将数据传递到另一个 [英] Passing data from one app to another one

问题描述

我有2个Android应用程序：

I have 2 android apps:

app1 - Activity11 --> Activity12 --> Activity13

app2 - Activity21 --> Activity22 --> Activity23

我想通过从一个应用的第二另一种的活动，传递一些DATAS 。

app1 - Activity11 -->(switch to app2)--> Activity22 --> Activity23

哪些步骤有我跟进？你知道一些教程？

What steps have i to follow? Do you know some tutorial?

我没有写code现在，因为我不知道从哪里开始。

I haven't write code for now, because I don't know where to start.

先谢谢了。

推荐答案

您需要考虑Android的意图和意图过滤器。 检查例如本次培训的文章。

You need to look into android Intents and Intent Filters. Check this training article for example.

本博客文章也可以是一个有趣的阅读。

一个简单的例子发送文字（其他类型是在顶部的链接）;

A quick example for sending text (other types are in the links on top);

Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
startActivity(sendIntent);

和接收：

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
    }
}

您将不得不还更新清单：

You'll have to update the manifest also:

<activity android:name=".ui.MyActivity" >
    <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>

这篇关于从一个应用程序将数据传递到另一个的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！