从SDCARD ANDROID 6.0.1获取目录路径

import android.os.Environment;
import java.io.File;

public class MainActivity extends AppCompatActivity {
    private String sdCardPath;

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

        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            File sdCardDir = Environment.getExternalStorageDirectory();
            sdCardPath = sdCardDir.getAbsolutePath();
        } else {
            // SD卡不可用的处理逻辑
        }

        // 获取SD卡中的目标目录路径
        String targetDirPath = getTargetDirPath(sdCardPath, "目标目录名称");
        // 使用目标目录路径进行后续操作
    }

    private String getTargetDirPath(String rootDirPath, String targetDirName) {
        File rootDir = new File(rootDirPath);
        File[] files = rootDir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory() && file.getName().equals(targetDirName)) {
                    return file.getAbsolutePath();
                }
            }
        }
        return null; // 目标目录不存在的处理逻辑
    }
}