从另一个应用程序接收共享 URL 到我的 Android 应用程序不起作用

Answer 1

根据@CommonsWare 的评论，我尝试了解更多信息，这就是有效的：

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    protected void onResume() {
        super.onResume();
        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 {
                Toast toast = Toast.makeText(getApplicationContext(), "Please share an url", Toast.LENGTH_SHORT);
                toast.show();
            }
        }
    }
    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
    }

    void handleSendText(Intent intent){
        String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT);
        Log.d("Textreceived", sharedText);
        if (sharedText != null) {
            //my work here
        }
    }

基本上把getIntent()方法放在onResume()里面，然后从onNewIntent()处理setIntent()。

这个答案真的很有帮助：https://stackoverflow.com/a/8896750/20059147