如何在单击按钮时开始活动以生成喷气背包的结果

Posted 2023-04-18

【中文标题】如何在单击按钮时开始活动以生成喷气背包的结果

【英文标题】：How to start activity for result in jetpack compose on a button click

【发布时间】：2022-01-22 04:32:46

【问题描述】：

实现在Java，想在Jetpack这个实现上写一个图标点击。按钮单击以显示语音到文本对话框：

mVoiceBtn.setOnClickListener(new View.OnClickListener() 
        @Override
        public void onClick(View v) 
            speak();
        
    );

主要问题是在compose中创建这个特定的Intent：

private void speak() 
        //intent to show speech to text dialog
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(
                RecognizerIntent.EXTRA_LANGUAGE_MODEL
                , RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Hi Speak Somethimh");

        //start intent
        try 
            //in there was no error
            //show dialog
            startActivityForResult(intent, REQUEST_CODE_SPEECH_INPUT);
         catch (Exception e) 

            //IF THERE WERE SOME ERROR
            //GET MESSAGE OF ERROR AND SHOW
            Toast.makeText(this, "" + e.getMessage(), Toast.LENGTH_SHORT).show();
        
    

    //receive voice input and handle it
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) 
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) 
            case REQUEST_CODE_SPEECH_INPUT: 
                if (resultCode == RESULT_OK && null != data) 
                    //GET TEXT ARRAY FROM VOICE INTENT
                    ArrayList<java.lang.String> result;
                    result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
                    // SRT TO TEXT VIEW
                    mTextTv.setText(result.get(0));
                
                break;
            
            default:
        
    

【问题讨论】：

您是否尝试过在 Compose 中实现此功能？如果是这样，你的尝试是什么样的？ :-) @Sharan

rememberLauncherForActivityResult 我有一个关于如何使用LaunchedEffect 启动的实现，但这是完全不同的目的，无法将该解决方案与所需的解决方案结合起来

好的。您是否有任何实际的 Compose 代码可以与我们分享，以便我们帮助您将其拼凑起来？ :-)

你read the documentation了吗？

【参考方案1】：

记住结果的启动器活动和启动未决意图是我能找到的解决方案，可能有更好的方法。

        val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
        intent.putExtra(
            RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
        )
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault())
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Hi Speak Somethimh")
        val context = LocalContext.current

        val pendIntent = PendingIntent.getActivity(context, 0, intent, 0)
        var code by remember 
            mutableStateOf("")
        
        val launcher = rememberLauncherForActivityResult(
            contract = ActivityResultContracts.StartIntentSenderForResult()
        ) 
            if (it.resultCode != RESULT_OK) 
                return@rememberLauncherForActivityResult
            

            //GET TEXT ARRAY FROM VOICE INTENT
            val result = it.data?.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)

            if (result !== null) 
                code = result[0] ?: ""

            
         

Button(onClick = 
                launcher.launch(
                    IntentSenderRequest.Builder(pendIntent)
                        .build()
                )
            ) 
                
 

【讨论】：

当ActivityResultContracts.StartActivityForResult 合约已经存在时，你为什么要使用ActivityResultContracts.StartIntentSenderForResult() 直接获取Intent？

知道了，谢谢，我只是在找这份合同

@Sharan 这是我推荐的实现：***.com/a/70711094/6805392