public class TextSearchActivity extends AppCompatActivity {
    private static final String TAG = "TextSearchActivity";
    private static final int RC_OCR_CAPTURE = 9003;
    
    private TextView resultTextView;
    private String searchPattern;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_text_search);
        
        resultTextView = findViewById(R.id.result_text);
        searchPattern = "[A-Z]{2}\\d{4}"; // 示例：搜索类似AB1234的模式
        
        // 启动相机捕获
        Intent intent = new Intent(this, OcrCaptureActivity.class);
        startActivityForResult(intent, RC_OCR_CAPTURE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == RC_OCR_CAPTURE) {
            if (resultCode == RESULT_OK) {
                if (data != null) {
                    TextBlock textBlock = data.getParcelableExtra(OcrCaptureActivity.TextBlockObject);
                    processTextBlock(textBlock);
                }
            }
        }
    }

    private void processTextBlock(TextBlock textBlock) {
        String text = textBlock.getValue();
        Pattern pattern = Pattern.compile(searchPattern);
        Matcher matcher = pattern.matcher(text);
        
        StringBuilder result = new StringBuilder();
        while (matcher.find()) {
            result.append("找到匹配: ").append(matcher.group()).append("\n");
            result.append("位置: ").append(matcher.start()).append("-").append(matcher.end()).append("\n\n");
        }
        
        if (result.length() == 0) {
            resultTextView.setText("未找到匹配模式");
        } else {
            resultTextView.setText(result.toString());
        }
    }
}

// 在使用前检查API可用性
TextRecognizer textRecognizer = new TextRecognizer.Builder(context).build();
if (!textRecognizer.isOperational()) {
    // 提示用户安装或更新Google Play服务
}

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />